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-March 2010 Important Notice -
I currently have a waiting list for backpack and shelter orders stretching until At Least Mid-June. I will not be taking any more backpack or shelter orders until the waiting list gets shorter. If you made prior arrangements or need to modify an existing order you can still make a payment Here.

Accessory items are still shipping in a day or two as usual. Thanks for all the orders, I apologize for the long wait!  - Joe
ZPacks backpacks come in the following standard sizes:

2,000 Cubic Inches / 32.8 Liters


Body Dimensions: 6" x 10" x 25".
Body Capacity: 1,500 cubic inches.
The Center and Side pockets add an additional 500+ cubic inches.

This size is best suited for short trips. With a compact gear list it can hold two or three days of food. Additional space can be created by lashing items to the outside using options such as a top strap, shock cord lashing, base loops, etc.
 
 
2,600 Cubic Inches / 42.6 Liters

Body Dimensions: 6" x 12" x 29".  
Body Capacity: 2,088 cubic inches.
The Center and Side pockets add an additional 600+ cubic inches.

This is the size that I used on all three of my thru-hikes. I was generally able to carry 4-5 days of food in addition to 5-6 lbs of gear and 1-4 liters of water. I've managed to carry up to 11 days of food with this size pack by lashing lighter items to the outside of the pack. Note that frameless packs can be uncomfortable with loads over 20lbs, but once in a while is usually fine.
 
 
3,200 Cubic Inches / 52.4 Liters

Body Dimensions: 6.5" x 13" x 31". 
Body Capacity: 2,620 cubic inches.
The Center and Side pockets add an additional 650+ cubic inches

This size should give you some extra space, maybe for a thicker sleeping pad-frame, or for bulky winter gear.
 
 
Larger or Smaller Packs

I am often asked to do larger packs or other sizes. I can scale the design to any size you need, just ask.

Keep in mind that frameless packs become uncomfortable with loads over 20 lbs / 9 kg regardless of the size. Heavier loads once in a while are fine, but consider choosing a strong material like Dyneema, and adding carbon fiber stays if you need to carry heavy loads on a regular basis.
 
 

Belt length and torso height can be adjusted on the Backpack Options page.
 
 

Shipping is always just $3.95 in the U.S. and $9.95 for Global Orders!