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Zpacks™ Challenger Rain Pants


This item is temporarily out of stock pending the arrival of new material. ETA February 2017.

Challenger Rain Pants - $165
Waist Size

3.8 ounces (108 grams) - Medium waist, regular length

Clothing items are made to order and are currently shipping 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.

Our remaining stock of new Challenger Rain Jackets and Pants are available in our Bargain Bin!


The Challenger rain gear was tested on our 2014 Great Outdoor Challenge hike across the Highlands of Scotland. On our trip the strength, waterproofness, and breathability all proved to be very good. The pants are breathable enough to sleep in or hike in if it is cold out without getting clammy. The material is thick enough to withstand light brush and abrasion, while still being among the lightest possible choices for WPB rain gear.


Built from 1.62 oz/sqyd Waterproof Breathable Cuben Fiber material! The material is a three layer laminate consisting of an eVent membrane on the inside, Dyneema fibers in the center, and a thin layer of Nylon on the outside.

  • The eVent Membrane provides industry leading water vapor transfer. The pants are completely waterproof, while still being breathable enough to sleep in or hike in if it is cold out without getting clammy.
  • Dyneema fibers provide extremely high tear strength and rip-stop qualities.
  • A thin layer of Nylon on the outside gives the pants abrasion resistance and allows the fabric to by dyed a nice solid color. The nylon has a durable water repellent (DWR) applied to it to prevent water absorption.
  • As with all Cuben Fiber material, repair tape sticks extremely well so repairs in the field are a cinch.


  • Adjustable shock cord at the waist. The shock cord can be cinched down to any minimum.
  • Ankle zips to easily fit over your shoes. The zippers are on the inside of the leg where you can reach them easily.
  • Packs up tiny as shown. Roll the pants up and secure them with the waist elastic. No stuff sack necessary.
  • Lightest 3 layer waterproof breathable pants in the world?
  • Combine these pants with a matching Jacket and Mitts for a super light rain suit!
  • 1 year warranty against defects in materials or workmanship on all Zpacks gear.

Sizing Chart:

Waist Size: Small Medium Large
Fits Waist: 24-29" (61-75 cm) 30-34" (76-88 cm) 35-39" (89-100 cm)
Weight: 3.6 oz (102 g) 3.8 oz (108 g)  4.0 oz (113 g)

Length: Short Regular Tall
Fits Inseam: 29-30" (73-77 cm) 31-32" (78-82 cm) 33-34" (83-87 cm)
Weight: -.2 oz  (6 g) +0 oz (0 g) +.2 oz (6 g)


The pants have an adjustable elastic waist, and the waist can be cinched down to any minimum. The material does not stretch and there is no zipper, so the waist is loose enough to come up over typical hips and fit over your normal hiking pants. Women with large hips may need to size up a waist size.


Machine washable. Line dry only. Do not dry any Cuben Fiber Gear on high heat or it may shrink or delaminate.

Reviews and Customer Testimonials:

Please email us with feedback (good or bad) if you have any!

"Just put my new Challenger rain pants through the wringer. Worked great! You guys rock!" -David D.
"I just wanted to let you know that I used, and abused, your product on the Colorado Trail Bike Race this year. I used your rain pants, jacket and mittens. All performed flawlessly and I seemed to wear the pants a ton (to sleep in cause it was super cold, to break the wind and also to keep the monsoon rains off of me). I just wanted to say 'thanks'. You were prompt with my order, answered my questions and helped get my rain pants to me even though I ordered them later than everything else." -Norb D.
"I did a 3 day snowboarding trip in February '15 with a full Challenger rain suit and mitts. I had limited packing space and was able to fit the whole suit into one boot for travel. Snowboarding is a fairly strenuous activity involving lots of arm and torso movement, crouching, and the occasional wipe out. I was half expecting my suit to shred apart the first time I hit the icy ground, so I had repair tape handy just in case. Surprisingly it sustained no damage or abrasion even after abusing it far beyond what it was designed for. The suit kept me dry and warm in temperatures down to 0F not including crazy wind chill and whipping snow at the summits. I wore just a Patagonia thermal base layer, and an insulated hiking jacket underneath." -Joe Valesko