ZPacks™ Arc Blast Backpack
Our patented 'Flexed Arc' frame creates an air gap
against your back for a super comfortable fit. The air space keeps your back cool and also
provides a buffer from any lumpy items in your pack. The curve of
the frame is adjustable for optimal air flow and fit. No extra
The pack is constructed from tough 2.92 oz/sqyd Cuben Hybrid fabric.
This material is Cuben Fiber on the inside with a
protective layer of 50 denier Polyester on the outside. The outer layer
gives it even more strength, prevents fraying, and gives it a nice solid
color. The material and design can handle loads up to 35 lbs (16 kg).
Total Volume: 55 Liters
/ 3,400 cubic inches - 21.0 ounces
Main Body Volume: About 43 Liters / 2,600 cubic inches
7" x 12.5" x 30" (16.5 cm x 31.8 cm x 76 cm)
The side pockets account for 5 Liters / 300 cubic inches and the
mesh center pocket is 8 Liters / 500 cubic inches, and are included
in the total volume.
Load Carrying Features:
- Please check out this
Video of the Arc Blast Backpack Features.
- Our ultralight Flexed Arc frame keeps the pack stiff
so that most weight is carried on the hips instead of the
shoulders. The frame pieces and mesh back panel can be easily removed or replaced.
The frame is curved to allow air flow and keep your back cushioned
from the pack's contents. You can adjust the curve by tensioning
the mesh back panel. The recommended arch is about 2.5" (6 cm).
- The belt is attached directly to the bottom of the pack frame for the best load
- The belt is removable and interchangeable. If you lose weight or need to
share the pack between people the belt can be swapped out.
- The shoulder straps and load lifter straps are attached directly to the frame. Load lifters straps come standard on this pack.
- The shoulder straps can move up or down to adjust the torso height to a perfect fit. It works like a conveyor belt.
This is great for sharing the pack between people, for growing teenagers, or for
- The belt provides a full wrap around your back. No need for additional lumbar support.
- The belt is done with "V Style" webbing so that the top and bottom
circumference can be adjusted independently. This helps wrap your
hips much more securely, and prevents the belt from sliding down.
- Collectively these features provide the additional load transfer necessary for loads
up to around 35 lbs (16 kg).
Standard Backpack Features:
- Roll top closure (like our
dry bags) keeps water
out, and lets you roll down the top as your gear load shrinks. All seams and attachment
points are taped, making the pack highly water resistant.
We still suggest using dry bags for your important items like your
- Comfy 3/8" thick by 2.5" wide padded contoured shoulder straps and padded
Both the straps and the belt have a daisy chain for clipping on
items, and an adjustable position sternum strap is also
included. The belt and shoulder straps have 3D mesh on the underside. This gives them a little bit more cushion, and the belt
also has more texture for better grip.
- Side pockets are sized to fit 1 or 1.5 liter bottles. They are
positioned low on the pack and slanted forward for easy access
without removing the pack. The pockets have drainage holes at the
bottom, and elastic that keeps them tight at the top.
- Large stretchy mesh center pocket is great for quick access items. Mesh
also lets you dry wet clothing and gives you a clear view of your
- Side compression straps are made from non-stretchy Dyneema cord
for squishing down the pack volume. They also allow you to stand tall
items like trekking poles in the side pockets.
- A top strap, and base straps allow you to lash on extra items
to the top or base of the pack. The straps come off if you don't
- A centrally located Hydration Port is included to string out a
drinking tube over either the left or right shoulder. It is just
above/between the shoulder straps and it has a triangular cover to
keep out water. A water bladder can either be
hung from an internal hang loop, or laid horizontally on top of
- The 55L pack size has enough space for 5-6 days of
food and ultralight gear. The pack can be compressed down with the roll top
and side compression straps for short trips, or use the top strap and base
straps to lash extra stuff to to the outside for long carries.
- All standard Bear Canisters, including the Bearikade
Expedition and the BearVault 500 will fit in the upper half of
this pack standing on end. There is enough extra girth to either
wrap a foam pad around the canister (if you use one), or stand a
medium stuff sack vertically beside the bear canister.
- The frame height changes depending on which torso range you
choose. The Short and Medium size frames will fit into an Airplane overhead bin
and can be used as a carryon
when flying. The Tall size frame may not fit unless you pop the
vertical frame bars out of the pack.
- All ZPacks gear has a one year warranty against defects in materials or
workmanship. Returns or exchanges are welcome.
- For more info check out the
Backpack FAQs. Make sure to hop down to the bottom of the page
for Reviews and Testimonials.
The torso height on our backpacks is the actual distance
on the backpack
measured from the bottom of the belt to where the shoulder straps attach. Your
best bet for sizing is to find an existing pack that you like and measure it
directly. The torso height on this pack is adjustable up and down within a 4
inch (10 cm) range for a perfect fit. The Medium range is a good bet for the
most people unless you are fairly tall or short. If you are on the line get
The shoulder straps should be positioned level with, or a bit below the tops of
your shoulders. The included Load Lifter straps will pull the shoulder straps up
off your shoulders and will also pull the top of the pack in over your shoulders
to help stabilize it.
The belt size is the length of the belt padding from tip to tip. For example, a medium 30 inch (76 cm)
belt has 30 inches of padding from tip
to tip. The belt can cinch down to the point of the padding just about touching
in front. The belt webbing extends 15 inches (38 cm) beyond the
padding. So for example, a Medium belt would fit a range of 30" to 45".
Use a string or cloth tape measure pulled tight around the spot on your body
that you want the belt to ride. You want at least a few inches of webbing in
front to allow for adjusting the buckle. If you are on the line, size down so
that you have room for adjustment. As an example, if you measure 35 inches, a
medium 30 inch belt would give you 5 inches of webbing to adjust in front but a
large 34 inch belt would barely fit with almost no room for adjustment.
Backpacks are currently built and shipped in about one week
. If you need your gear by a certain date please email us after you order
and we will schedule accordingly if possible.
There are a handful of lightly used Backpacks in our Bargain
Every option below is detachable and can be added later.
These clip to your shoulder straps and are an excellent spot for your
camera, GPS, phone, sunglasses, or other items that you want to grab quickly. Mesh
on the front of the pouch gives you additional storage for small items like chap
stick, keys, etc. They can also be used for .5L water bottles to
counter balance a small pack.
These are detachable and can be used on non-ZPacks backpacks as well.
They are symmetrical and can be switched left or right.
Weight: .5 oz / 14 grams each
Price: $25 each / $45 pair
Shoulder Pouch Details
These pouches clip securely to the daisy chain on your padded belt.
They have taped seams, a waterproof zipper, and are highly water
resistant. Each pouch has about 1 liter of volume and is perfect for
maps, snacks, hat and gloves, gadgets, you name it.
These are detachable and can be used on non-ZPacks backpacks as well.
They are symmetrical and can be switched left or right.
Dimensions: About 6" wide, by 2" deep, by 5" tall.
Weight: .75 oz / 21 grams each Price: $25 each / $45 per pair
Belt Pouch Details Here
Aquaclip Water Bottle Holder
The Aquaclip allows you to attach a 500ml bottle to your shoulder strap or belt. The bottle can be popped in and out easily on the go.
Weight: .43 oz / 12 grams Price: $4.95
Aquaclip Details Here
Multi-Pack - Four in One Backpack Lid / Chest Pack / Belt Pack
This four-in-one backpack accessory can be attached to the top of
your pack as a lid, carried on your chest as a front pack, or worn
at your hips as a fanny pack, or carried over your shoulder as a
satchel. About 3.5 liters / 215 cubic
inches volume. This will also work on non-ZPacks backpacks as long as
there are loops to clip it to.
Weight: 2.9 ounces - 82 grams Price: $45
Multi-Pack Details Here
This pouch is attached to two stick-on-clips. It is stuck inside the
backpack as a safe place to store your car keys and wallet. If you order
this at the same time as a backpack we stick it on for you towards the top of the pack right
behind the shoulder straps so that it is easy to get to. The
adhesive bonds well with Cuben Fiber and will also work on any
urethane coated backpack material.
It is large enough to fit your keys, wallet, passport, or even a large
phone like the iPhone 6 Plus as shown.
The pouch can easily be unclipped and doubles as a large wallet around
The pouch itself weighs .6 ounces (17 grams) and the stick-on clips
add about another .1 ounce (3 grams)
Dimensions: 7.5" wide x 5" tall (19 cm x 12.5 cm)
Weight: .6 oz / 17 grams Price:
Key Pouch Details Here
Top Side Pockets
These pockets have a loop at each corner to connect them to
corresponding loops on the sides of your pack. Since these are not sewn to the pack
you can still stand tall items like trekking poles, an umbrella, or a
fishing pole behind the pockets. The pockets can be taken off or added
The dimensions are roughly 6" wide x 3" deep x 8" tall.
They are a good fit for:
-A 1 Liter or smaller pot
-A 1 Liter water bottle
-A water filter
-A poncho or light jacket
-Hat and gloves
-An inflatable sleeping pad.
Weight: .5 oz / 14 grams each Price: $25 each / $45 per pair
Ice Axe Loops
A pair of loops are attached at each corner of the pack for securing ice axes. The head of each axe secures through
a loop at the bottom, the handle is kept tight at the top with a shock cord band. The loops can all come off when
you aren't carrying axes.
Weight: .1 oz / 3 grams Price:
Trekking Pole Holders
Adjustable shock cord loops with cord locks are attached to your shoulder
strap and to your belt to temporarily hold a trekking pole at either side.
These are convenient if you want to quickly stow your poles for climbing,
road walking, or other situations where you don't need your poles
temporarily. You can stow them and retrieve them without stopping to remove
You can easily attach these to any older ZPacks backpacks, or other
brand packs. These are attached to both shoulder straps, but can be easily
popped off when not needed. Some people also move these up
higher on the shoulder strap for securing a water bottle or umbrella.
Weight: .4 oz / 12 grams per set of 4 loops. Price: $10
Roll-Top Closure Straps
All Arc backpacks include a roll top opening by default. Normally the
opening is closed by rolling it shut, and clipping a buckle together at the
top of the pack as shown on the Green backpack. The included top strap can be used to keep the roll top
snug to the pack.
Roll-top closure straps let you clip the roll top down to the sides of the pack,
rather than simply to itself. You can compress the top of the backpack down
a little easier, but you can do the same thing with the normal roll top just
by rolling it down.
This is more of a cosmetic option / personal preference. If you add these
you still have the freedom to secure the top of
the pack in either of the two ways shown to the left.
The straps are detachable, and they can be clipped on to any
older Arc backpack.
Weight: .5 oz / 14 grams Price:
V Top Strap
By default there is a single webbing strap going over the top center of the backpack.
A single strap works great for lashing on a soft item like a tent or a dry bag to the top of the backpack.
If you need to carry a heavier item, or a hard sided item where the strap
can't dig in, you may want a V shaped top strap for more stability. This can be
used to carry a bear canister on top of your pack, so long as the canister
can squish into your gear as shown. Alternatively a canister can also be carried standing
vertically inside the pack.
Attachment points are in place for both the normal top strap, or the V top
strap, but you only get one or the other with the pack depending on if you
upgrade or not. The top strap is removable and you could switch it later.
Weight: .5 oz / 14 grams Price:
The belt on Arc backpacks already has full-wrap padding behind your back,
but this option doubles it with a detachable lumbar pad. The pad slides on or off your existing belt and is held in place by two
bands on the back. It is also tied in place at the bottom center so that it
can't ride up or down. The Lumbar Pad is made with 3D mesh against your back
for more cushion and grip.
If your belt is just a little too large, this reduces the belt circumference
by about an inch.
Most people probably won't need this option, and it can be added later if
you find you want it in the future. It will also fit all older ZPacks
Weight: 1.0 oz / 28 grams Price:
Shoulder Strap Pads
The shoulder straps on Arc backpacks already have 3D mesh on the underside,
and most people seem to find them comfortable without any modification.
If you think you need more padding, these pads clip on over your normal
straps and can be positioned right where you need them. These can be ordered
later if you find that you need them down the road. They will likely fit
non-ZPacks backpacks as well.
Weight: .95 oz / 27 grams Price:
Shoulder Strap Pad Details Here
Roll Top Dry Bags
Up to 6 size medium or medium-plus size roll top bags will fit inside the body of the
pack, and up to 3 more can be strapped on to the top and bottom of the
pack for long carries. That's alot of capacity! Put your heaviest
items (food, water) on the inside of the pack close to your center of
gravity, and lightweight items (tent, clothes, pad) on the outside if you
run out of internal space. The Large Rectangle Food Bag is a good fit for this pack.
Roll Top Dry Bags
The belt on Arc backpacks is removable and interchangeable. This is a useful
feature if you lose or gain weight, or if the pack is transferred to a
different size person. If the belt wears out before the rest of the
pack you could replace it.
The belt is attached directly to a horizontal frame bar. To remove the belt,
pull out gently at the center until the frame bar bows enough to pop out of
its holster at the left or right. The belt slides off the bar.
To put the new belt on:
- The pack belt attachment has two pockets (left and right) and two
loops towards the middle (left and right).
- Slide the bar through the right loop on the pack. Then through the
back of the belt. Then through the left loop on the pack, and into the
left pocket on the pack.
- Make sure the bar is all the way into the left pocket.
- Pull out gently on the center of the belt to flex it until the right
side of the bar pops into the right pocket on the pack.
Replacing the belt can be a bit tricky and it is not something you would
want to do frequently. The spare belt includes a spare frame bar.
Shock Cord Lashing
3/32" Shock cord is criss-crossed along the front of the backpack. It can be
used to compress the pack, or to strap on items. The shock cord can be
detached when not needed. It does get in the way of the center pocket a bit.
Weight: .5 oz / 14 grams Price:
The Arc Blast backpack was originally designed in 2012. Prior to that most of our
backpacks were "frameless" and relied
on a folded or coiled sleeping pad for support. I did my first three thru-hikes
(AT, PCT, CDT) with frameless packs very similar to our current Zero backpack.
Frameless backpacks are ok for super ultralight loads, but they start to get
uncomfortable on the shoulders when they are pushed beyond about 20 lbs (9 kg).
On a long hike, heavier food and water loads are inevitable.
Our goal was to create a comfortable pack with a frame without adding any more
weight than necessary. A frame keeps the pack rigid making it easier to pack and
it also holds its shape when half full. A frame transfers weight to the belt, and feels alot better on your back and shoulders when pushing weight loads into the 20-30
My wife Sheryl and I gave Arc Blast backpacks their first big test on our
2012-2013 Te Araroa thru-hike in New Zealand. This hike was close to 1,900 miles
and four months long across all types of terrain the length of New Zealand (Trip
report / Gear list
Our packs held up very well on that trip with minor wear and tear. Since then we
have added taped seams and more strategically placed reinforcements for even
better longevity. Our packs felt great
. They were a big improvement in
comfort over the frameless packs we had used in the past. The extra few ounces
for the frame was totally worth it, and the cushion and air flow against
our backs was appreciated in the warm, wet, humid New Zealand weather.
The original Arc Blast could handle about 30lbs before getting too uncomfortable
on the shoulders. In 2015 we updated the frame and belt to push the comfortable
load capacity to 35 lbs or more. It now has the same features as our Arc Haul
backpack except in Cuben Fiber.
Reviews and Customer Testimonials:
Please email us with feedback (good or bad) if you have any!
"The ZPacks Arc Blast is the lightest pack we tested with a frame that can carry up to thirty pound loads. It has good internal storage and we loved that it is practically waterproof.
For multi-month hikes where every ounce counts, our thru-hiker testers loved the Arc Blast." The Arc Blast received a 2016 Outdoor Gear Lab "Top Pick"!
Read the full review.
Adventure Writer Keith "Fozzie" Foskett
reports from his 2013 El Camino
de Santiago thru-hike with his Arc Blast!
Read his informative Arc Blast review with photos
Update- Keith has finished his second El Camino de Santiago hike in 2014. "My
now has 1900 Miles on the clock and it barely seems worn in."
"On the impressiveness scale, I would put the load carrying abilities of the
ZPacks Arc Blast, for loads in the sub 20 range, at exceptional."
Check out the full
by John Abela (Hikelighter.com)
"The Arc Blast is a deceptively sophisticated backpack that works extremely
well in its base configuration but can also be enhanced using add-on accessories." -SectionHiker.com
reviews the Arc Blast Backpack
"The Tour Du Mont Blanc was amazing! The Arc Blast did exceptionally well carrying
all of my gear and food for 8 days of travel through the French, Italian, and
Swiss Alps!" -Ben Smith (Goosefeetgear.com)
"I just wanted to let you know that I received the pack today. I had extremely
high and unfair expectations from the reviews and recommendations I had
received, which the Arc Blast has (somehow) more than surpassed! This is my
first ZPacks product and I am just blown away by the craftsmanship and
I was expecting some imperfections from a smaller company, but the stitching
and the water taped seams are just beautifully done, as is the rest of the
pack. On top of all that, I just loaded it up with a lot extra gear and the
weight transfer is unbelievable, couldn't really tell the difference between 1
pound and 15 pounds." -Rocky J.
"Got back from my Sequoia adventure with the Arc Blast pack. I was a little
apprehensive, I didn’t think a one pound pack would handle 35 pounds, expedition
canister with food for 9 days included. We weighed them with scales before
heading off to trail. At that point I was committed and thought “oh boy”….
I must say this was the most comfortable pack I’ve ever used. And I’ve used ULA,
Six moons, and granite gear stuff. Pleasant surprise!" -Chuck T.
"Thanks for the Arc Blast. We loved it. Best, and lightest of the breed. We used
it for four days and three nights through about 32 miles and 6000ft of up and
down , rain, sleet, hail, and snow without any fault or discomfort. Also,
survived six airplane rides and several mad dashes through the airport with a
full load. I'm sure this is nothing compared to what others have done with the
pack." -Arlo A.
"I have been using the 60 liter Arc Blast backpack I purchased from you for a
couple months now. I love the pack and I think it's the most perfect designed
and constructed pack to be found anywhere. I have shown the pack to lots of
hikers and recommended it to everyone." -Chuck F.
"Your products have changed my life. I went on the most comfortable backpacking
trip of my life last weekend using the Arc Blast, sleeping bag, hood,
toothbrush, towels, just about everything you sell, haha. Thanks so much for the
wonderful products and your amazing customer service, I will be singing your
praises up and down the PCT this summer." -Otto R.
"Alyson & I can’t thank you enough for how much we enjoyed the zPacks gear
during our recent walk in Spain. It’s not just the light weight – the Arc Blast
packs are so well designed we just put our gear in and everything was so easy to
access when we needed it." -Mark & Alyson
"The backpack was comfortable and survived the harsh environment on the
Larapinta Trail in Australia. One of the most comfortable packs I have used.
Just large enough for 10 days gear and dehydrated food, three litres of water
and SLR camera. Start weight about 17kg."
"Just completed the GR-5 last week in France. The
pack was fantastic,
easily carrying 10 kgs, completely water resistant through every thunder storm,
and unbelievably light. Thanks for a great piece of gear." -Avi. (photo
"I seem to have (inadvertently) got the JMT southbound record time 4 days, 8
hours, 43 minutes. I used a lot of ZPacks kit on this trip - Arc Blast pack,
Hexamid tarp, ZPacks sleeping bag, WPB rain jacket and kilt." -Ralph Burgess
I am not a super-light hiker but an older guy incrementally dropping
weight. I was surprised how comfortable the Arc Blast was. I expected to "give
something up" in order to drop weight. Not the case with the Arc Blast! -Doug L.
"The pack is great! 6 days in the Grand Canyon loaded with water, 8 days
bushwhacking in the Wind Rivers, 6 days on the AT, all loaded for the duration.
Carries far more weight than you rate it for and does so well ... it's a
beautiful thing and my favorite of all my packs!" -Bob M.
"The Arc Blast I got some time ago worked great at Philmont this summer, even
when hauling up to 50lbs. The Scouts still haven't learned anything about light
weight food, so we had plenty of canned goods and gallons of water due to the
drought. The pack was uber comfortable, even under such heavy loads. Love your
gear!" -Daniel L.
Disclaimer: You probably should not carry 50lbs in this pack, but it is nice to
know that you could in extreme circumstances. 30-35lbs is a more reasonable
"I just returned from a 10-day trip in the Sawtooth Wilderness in Idaho. The Arc
Blast pack was wonderful. It is the best backpack that I have ever owned. Thank
you for lightening my load by approximately 2 pounds from last year's trip!"
"I used the Arc Blast on my recent JMT thru hike. The pack performed perfectly!
It was super comfortable even with 7 days food in my 12" Bearikade (about 31 lbs
total weight) and shows no visible wear and tear. I actually saw several other
hikers with the same pack and 100% of the people who had them loved them! I put
the Bear can in the middle of the pack to avoid any potential wear and
tear on the bottom, and the weight distribution was great." -Mick P.
"Thank you for quickly sending out my new backpack to Reds Meadows. My old pack
was falling apart and I was able to complete the John Muir Trail without
interruption. The Arc Blast fits perfectly and was a joy to carry. Many people
asked about it and we gave them your website! The Hexamid solo is still working
wonderfully after 3700 miles too! Hope you continue to have great success with
your business." -Jellybean
"I just finished a JMT thru-hike with a 60L Arc Blast and a Hexamid Duplex, and
they both worked fantastically. The pack held my BearVault 500 with a peak
weight of about 25 lbs without problem, and it still looks in good shape!"
"This year I was trekking in the French Alps and found Arc Blast just fantastic!
It sits very well on your body, I could easily adjust the frame to regulate the
distance between the pack and my back, size and placement of the side pockets is
very good, my drink bottles and small snacks were very safe there. I felt like
backpack was very well 'united' with my body. We were trekking through some
difficult terrain and it was very comfortable, I'm really impressed. I did get
some tiny scuffs on the bottom from resting it on sharp rocks, but other than
that it is great. I'm so glad my friend told me of your website." -Ewa K.
"Just wanted to send a quick thanks for my Arc Blast! I have been absolutely
loving it and giving it a workout. Best pack I have ever owned. Here's a view of
the Chinese Wall
in The Bob Marshall Wilderness." -Will F.
"I received my 52L Arc Blast a couple of weeks ago and am more than
impressed with the quality, workmanship, and the overall comfort! I’ve never
hiked 20 mile days in a more comfortable pack! I don’t even feel like taking it
off during breaks on the trail! Its INSANE!!! I tell all my hiking partners and
friends about you guys!" -Rock S.
Fellbound discusses the merits of his Arc Blast Backpack and his Challenger Rain Jacket
in this Arc Blast Review
"My pack rocks. I really like the lumbar pad – just that extra bit of comfort and also stands it off my back a tiny bit more.
Plenty of ventilation, but still firmly in place. Carries loads from 15 to 25 lbs with ease.
Very, very nice; and gets lots of comments on the trail." -David A.
"Thanks a lot Joe. I just took the Arc Blast out on a 5 day section hike from Deep Gap NC to Fontana Dam.
It was awesome! I had a fairly low pack weight but it felt like I was not using a pack at all.
I also tried out my new Duplex tent, 30F Down bag, and Challenger rain jacket. They all performed really well.
I had a lot of interest from AT thru hikers I met on the trail.
I took the opportunity to sing the praises of your great equipment." -Michael H.
"Our May 2015 Gila Wilderness trip became an epic. We bushwhacked through extreme terrain, climbed canyon walls with belays down obstacles,
and swam through canyon pools that had no other way of progress.
We each had Arc Blast packs, and your tents and sleeping bags. The weather was cold and rainy with snow above 9,000 feet.
We bushwhacked through some of the most difficult terrain I have ever challenged.
Both ArcBlast packs took a beating. We scrambled through and over rocks as well as through heavy brush and stickers.
We even swam our ArcBlast packs through a 40 foot canyon pool.
John must have been more careful than I because he needed no trail repair.
He did have some fabric injury but nothing serious.
My side pockets developed several snags and small holes that I repaired on the trail with Cuban Tape.
Otherwise I have found no other damage. The ArcBlast pack is comfortable beyond my expectations.
We were each carrying about 22 pounds and I found that I hardly noticed the pack on my back.
I have used many packs and none have ever accomplished this. After swimming through a canyon pool 40 feet pushing my pack ahead of me
(they do float fully loaded) I might of had a tablespoon of water inside the pack." -Jay B.
“I bought an Arc pack from you a month ago at the ADZPCTO-- it is PERFECT and I enjoy perfect things.
Now I would like to buy a Duplex tent and the titanium stakes to go with it.” -Tom L.
"I love your pack that I bought way back in 2012! I enjoy is so much I've finally posted a long overdue
Owners Review on BackpackGearTest.org
I hope you all find the review as enjoyable as I find the pack!" -Steven K.
"My pack performed great! Here's a picture of a happy hiker
taken on side of Sonora Peak on the PCT. I had gear & water for both of us &
it carried really well. As I hiked with my new pack I was really impressed
by all the care and thought and inventiveness that you put into creating it.
When it arrived though it looked delicate — all that exposed carbon — long
time since I'd had an external frame pack. But it performed so well and I
got used to seeing the frame and was reminded how much nicer the carry is on
external frame packs.
It's really well done. I'm glad for all the features I chose. Turned out just right.
Oh and that grey color is particularly beautiful. Nicer in person than on the website." - Aife M.
"The Arc Blast backpack was wonderfully comfortable (and of course light) even with a 7.5-day carry of food.
I especially appreciated how modular the pack was. Being able to take off the belt pockets was particularly
useful when scrambling and rock climbing during summits of random fun mountains (Banner Peak, Warlow, Huxley, and John Muir Rock)!
I found the pack to be impressively water proof during persistent rains." -Nathaniel C.
"I wanted you to know that your Arc Blast pack performed beautifully during a six day hike on the AT in New Hampshire.
It is super light and very comfortable. It has been terribly wet up here so the trails were awful,
but the slogging was made easier with your pack." -Rand W.
"I took my new Arc Blast out for a four hour test up Mount Tamalpais this morning and it performed flawlessly.
It has just enough space for the Bearikade Expedition as you said it would.
Thank you for the superbly designed Arc Blast and your prompt reply." -Jon O.
"I just finished hiking the PCT from Campo to Cascade Locks and couldn’t have done it without my Arc Blast, ZPacks sleeping bag,
and Duplex tent. I have never had a backpack fit so comfortably on my back or carry loads with such ease.
The quality of your products and customer service of your company is unparalleled." -Austin J.
"We have just completed our 515 mile hike across Washington on the PCT. Having now put our new Duplex tent and my Arc Blast pack through their paces, I wanted to send you some product feedback.
I admit I was very skeptical about ordering this minimal pack, but I soon came to know it was a perfect choice for me. I love it! It is so comfortable, easy to use, and durable, not to mention attractive. Barely a day went by without another hiker noticing and asking about my pack. Many thought I was a ZPacks Ambassador because of my glowing and hearty endorsement of the pack!" -Heidi P.
"My friend's bag arrived. Gorgeous green. Your colors are much more beautiful than they appear on the website. I was worried flying
recently since the bag frame measured about 23" and the carry on restrictions are 22", but I can tell you the bag slides into
overhead bin (like a roll bag would) with an inch or two to spare. Yay. I use my 4 in 1 multi-pack all the time now and it is the best.
Comfortable. You have put so much good thought into these bags and I'm feeling quite lucky as the recipient" -Aife M.
(Editor's note- Airplane overhead bins are curved in the shape of the hull of the airplane. You get a few extra inches of depth at the bottom of the bin.
I have flown a dozen times on different airlines with no issue with a medium frame.)
"Is this what you had in mind with you designed the Arc blast? :). Arc Blast backpack shown fully loaded.
The bear can is mine but the two extra sleeping bags were to help some other folks.
The pack works great." Doug L.
"You're just too good at improving things, Joe. A never ending source of temptation. Thanks for everything.
Hiking has brought me so much happiness and spiritual growth -- and your brand of trail magic had been essential
in making it possible for this well worn 67 year old body." -River M.
"This pack have seen a lot of use in the last year and a half since I've owned it and I really have enjoyed carrying it. This Arc Blast has been a bombproof pack. Thanks for your design and your production quality." -John K.
"I recently finished my 2015 AT thru hike using your 60L Arc Blast. An absolutely amazing pack. I abused it daily and it held up.
A few holes in the mesh and some abrasions in one side pocket (probably from numerous falls and slides in the Whites) but was still functional. Best pack I've ever used and it just might make another thru. Thanks for great service and an awesome pack." -Don W.
"My Arc Blast Pack is TERRIFIC. Needed one of these years ago. I have used this every week since I bought it last year." -Annie W.
"This year my family and I hiked the Appalachian Trail. Although other families have done it in the past,
we were the only family in 2015 to complete the entire thing with all members (Father, mother, and 5 kids)
hiking every mile. All but our two smallest sons did it with ZPacks backpacks
! Our family absolutely loves your
products!" -Brent H.
"I received your pack just in time for my first real backpacking trip on the Outer Mountain Loop in Big Bend, Texas.
I'm 47, in pretty good shape and to date that was the most grueling thing I've ever done.
That was echoed by others in my group who are career military guys (a few of which are triathletes and seasoned backpackers).
In the desert stretch it was close to 100* with lots of elevation change.
One of my buddies who runs 30 miles/week had a heat stroke & I feel like we barely got him out.
Because you kept my request date in mind and got my pack out in time it absolutely made the difference.
The pack was light enough I was able to carry that extra liter that I gave to him and the dual straps
allowed me to carry half his heavy gear right on top of mine. We managed to get him out of that last 7 miles and carried back
into the basin. Of course I felt the weight but I NEVER even felt your pack on my back while others were complaining about
their hips and shoulders. I make and build a lot of stuff my self, and I had tried 4 other lightweight packs before yours
but you have made such a well designed pack I honestly don't know how it could be improved.
I just wanted to thank you for such an awesome product, for your customer service and for making the difference in helping me get to
the finish line." -Jerry B.
"I'm really enjoying testing the Arc Blast (for Trail Runner Mag Online). It's probably the best designed pack I've ever used - fastpacking or backpacking." -Ben L.
"I used the Arc Blast on my 2015 AT thru-hike. The pack was DONE at the end of the 2200 miles.
That is what I expected and was extremely happy with the pack.
I plan on doing the PCT next year and plan to get another Arc Blast or the Arc Haul for more durability." -Sol E.
"I used the backpack for the first time a couple weekends ago and put in a solid 36 miles.
I have to say I absolutely LOVE the pack.
Even with all the attachments and extras I came in 10 oz lighter than my previous lightweight backpack.
BUT, yours was so much more versatile, adjustable, comfortable.
The pouches were bigger, the belt had dual adjustments to keep it snug to my hips but not squeeze my stomach.
I played around with creating a bow in the frame to keep the pack away from my back which was amazing in the 90 degree weather
(with 90% humidity). I am very very happy with it.
It was a huge increase in price for me, but well worth it and you can see the level of detail,
craftsmanship and knowledge that went into the design." -Zack F.
"Back from trekking the JMT. Managed to complete the full trail in 8 days thanks in large part to my Z-Packs-based ultra light kit, including the Arc Blast, Altaplex and 20 degree sleeping bag.
All the gear held up great. Photo attached from Forester Pass.
" -Kevin B.
"Thought you’d like this picture of three Z-packs in the Grand Canyon
. Was backpacking with my friend and ran into this guy with his Z-hat and pack.
Instant bonding. Seriously! Best gear I’ve used. Have the backpack and tent. Love it! What a difference it makes with light comfy gear!" -Anna S.
"I received my pack yesterday and I wanted to tell you how impressed I am with the '2017' improvements.
Moving to the pockets for the stay holders is huge and the switch from cord to webbing straps on the mesh
back panel is even bigger. The more flexible stays makes the adjustment easier,
and now I don’t dread tightening and loosening the stays whenever it is handy.
I found myself loosening the stay tension in camp if I wanted to put the pack under my feet at night and whenever
I put it in a trunk for the ride to the trailhead. Seriously great improvements." -Wayne V.
Our Flexed Arc Frame is is covered by US Patent No. 9,060,590