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  • Polyester outer fabric dries quickly and features a durable water repellent finish to shed light rain
  • 2-way mechanical stretch yoke and gusset provide an extended range of motion
  • Cut higher in back for additional coverage when you’re in riding position
  • Integrated lightweight padded polyester liner shorts have a utility pocket on each leg
  • Low-profile chamois provides comfort
  • Zippered hand pockets
  • Internal waistband adjustment fine-tunes the fit
  • Mesh liner shorts can be detached to launder or wear separately under other shorts
  • UPF 50+ sun protection


View all Co-op Cycles Men's Bike Shorts

REI membership


Best Use Mountain Biking
Bike Short Style Double Short
Fabric Polyester
Liner Fabric 92% polyester/8% spandex
Pad Type Standard Chamois
Sun-Protective Fabric Yes
UPF Rating 50
Quick Drying Yes
Inseam (in.) Unavailable
Gender Men's

Size chart

Rated 5 out of 5 by from Great Lightweight MTB Shorts I got these shorts about a month ago and have put them through the ringer since then. I was concerned about durability because of how lightweight the shorts are but I've had no problems at all so far. I think the liner is the best part of these shorts. While they aren't too constricting, they seem to hold the liner perfectly in place. I love the idea of gel pockets in these, but I have not used them yet. The pockets are well positioned and deep enough to take a tool or a phone. They do ride up an inch or so (they fall a little above my knee when pedaling) when you have the pockets loaded. These are my new favorite shorts to ride in.
Date published: 2017-05-17
Rated 5 out of 5 by from Perfect MTB shorts I'm loving these shorts. Very comfortable and and great quality. The fit is very true to normal shorts, not normal biking shorts..I normally wear an XL bike short but these are a large.
Date published: 2017-04-09
Rated 5 out of 5 by from Great shorts with a good fit I give this product a 5 star, because the shorts on their own are fantastic. They're comfortable, breathable, and not too baggy in the crotch. Makes getting up and out of your seat easy. The padded underwear leaves something to be desired, but was better than nothing. Still value for the money, the shorts are fantastic!
Date published: 2017-05-15
Rated 5 out of 5 by from Super value Great shorts, and considering the price they might be the best option. They fit well (not too baggy and not too tight). Style is good and liner is decent. My only concern will be how well the liner holds up to some of the more expensive shorts just based on looks. But the first few rides have been great.
Date published: 2017-05-12
Rated 4 out of 5 by from Men's Co Op Cycling shorts Been trying these short and struggling between sizes. The medium are a tad too small but functional and the large (my normal size) are way too big. Unusual problem and I am a universal size Large (34" waste 180lbs). While riding, they are very comfortable. Padding is great. Style is nice
Date published: 2017-05-08
Rated 5 out of 5 by from Surprised how nice they were Honestly I just wanted something other than my regular gym shorts when I ride my bike and I had my dividend. But I'm really happy with the fit, the added comfort and the way they look.
Date published: 2017-05-11
Rated 5 out of 5 by from Short pants These might be the shortest pants I own, they could easily be considered shorts
Date published: 2017-05-13
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Are the COOP mountain cycle shorts available in the downtown Portland store

Asked by: Scotymac
For store availability, please use the "Find In Store" button on the product page.
Answered by: REIservice
Date published: 2017-03-23

It says the liner is removable - how do I remove it? Mine appears to be sewn in place. Not seeing any snaps or other fasteners. Only way to remove it would involve scissors.

Asked by: Cyclocross
Correct. To remove the chamois, you cut the two straps. These shorts are not designed to remove and then replace the chamois.
Answered by: REIservice
Date published: 2017-05-11
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