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

Details

  • Merino wool helps maintain comfort whether the climate is warm, cold or in-between
  • With a UPF 50+ rating, fabric provides excellent protection against harmful ultraviolet rays
  • Chafe-free flatlock seams enhance comfort
  • Wide, soft waistband enhances fit; functional fly
  • Close-to-skin fit and natural rise
  • The SmartWool Midweight Boot Top long underwear bottoms do not itch and will not shrink; machine wash and dry

Imported.

View all SmartWool Men's Long Underwear Bottoms

REI membership

Specs

Best Use Multisport
Fabric Merino wool
Sun-Protective Fabric Yes
Moisture Wicking Yes
Underwear Weight Midweight
Inseam (in.) 20 inches
Gender Men's

The REI Difference

100% satisfaction guaranteed

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.

Gear & advice you can trust

At REI, we live and breathe the outdoors, and we're passionate about sharing our expertise with people of all skill levels. Whether you're new to the outdoors or a seasoned explorer, we'll take the time to understand your needs and help you find the right gear for you.

10% annual member refund

Anyone can shop at REI, but for a one-time $20 fee you can become an REI member and enjoy a lifetime of benefits. These include an annual member refund, typically 10% back on eligible purchases.*

 

 

*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