Where to Buy
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Here's what other sites are saying:
The REI Silk long underwear bottoms are smooth, soft and incredibly comfortable. They'll help keep you warm on a cold day and they work great under additional layers.
- REI refers to the men's version
REI Heavyweight Long Underwear Bottoms
REI Lightweight Long Underwear Bottoms
REI Midweight Long Underwear Bottoms
REI Silk Bottoms
Marmot Midweight Bottom
Patagonia R1 Pants
Helly Hansen Fly Pant
Smartwool Midweight Bottom