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This product is no longer available, but don't go just yet.


  • Polartec Power Dry utilizes two different yarns on either side of the fabric to enhance comfort: interior yarn wicks moisture, and exterior yarn dries quickly
  • Combination of the two yarns helps keep you dry during highly aerobic activities because it moves moisture away from skin faster than single-component fabrics such as cotton
  • Waistband zipper with a functional fly is easy to undo when nature calls
  • Flatseam construction is soft and non-chafing next to skin
  • Fabric offers a UPF rating of 20 to protect against harmful UV light
  • The men's REI Midweight Polartec Power Dry Allstar Suits feature a next-to-skin fit that hugs the body


View all REI Men's Long Underwear Bottoms

REI membership


Best Use Snowsports
Fabric 87% polyester/13% spandex
Sun-Protective Fabric Yes
Moisture Wicking Yes
Quick Drying Yes
Underwear Weight Midweight
Inseam (in.) 30.75 inches
Gender Men's

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We stand behind everything we sell. If you are not satisfied with your REI purchase, you can return it for a replacement or refund within one year of purchase.

REI's guarantee doesn't cover ordinary wear and tear or damage caused by improper use or accidents.

If your item has a manufacturing defect in its materials or workmanship, you can return it at any time. See our limited warranty.

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*10% is typical but not guaranteed. Your refund is based on eligible purchases, which exclude REI gift cards, services, fees, REI Adventures trips, REI Garage, and discounted items. Learn more