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  • Water-resistant, durable Pertex™ Endurance nylon fabric resists wind and water; seat and knees are reinforced for extra protection from the elements
  • Primaloft® Silver Insulation Eco is made from 70% post-consumer recycled content; lightweight construction offers bulk-free warmth and compactible packing
  • Water-resistant and breathable, Primaloft® Silver Insulation Eco prevents clamminess by keeping moisture out
  • Double-separating side zippers for easy on / off over boots
  • Dual sliding zipper fly
  • Elastic back waistband
  • Zip pockets


View all Outdoor Research Men's Mountaineering Pants

REI membership


Best Use Mountaineering
Fabric Pertex nylon
Lining Fabric Nylon taffeta
Insulated Yes
Insulation Type Synthetic
Insulation PrimaLoft Silver Eco polyester fibers
Side Cargo Pockets Yes
Inseam (in.) 33 inches
Gender Men's

Size chart

Sizing notes

All sizing is based on body measurements.

Rated 2 out of 5 by from Strange sizing and quality Typically like OR gear. Bought a size large which is usually slightly large for me, but with these pants were smaller. Front button of poor quality and popped open much too easily. Also fabric seemed much to flimsy and susceptable to rips. Brought back to store to exchange.
Date published: 2016-06-29
Rated 4 out of 5 by from Great light weight These pants are really nice. Lots of features. Fit is great and functional for activity. These are also super lightweight. Actually the lightest in its category I could find. I don't think they will be super warm though depending on your intended use.
Date published: 2016-12-13
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