Extra layer for your legs when the temperature dips. Great sleeping wear as well.
regular & long
Comfortable, warm, and quick-drying: the trifecta of a perfect pair of long underwear. The REI Silk Underwear Bottoms are an affordable option for adding a layer when the weather turns cold. Smooth, soft fabric makes you almost forget they're on, while the just-right amount of warmth will make you glad you had them for those frigid trips up to the Matterhorn or to Mont Blanc.