Hot Chillys Men's La Montaña Bottoms are the best at keeping the king of the mountain warm and toasty. These thermal pants are made with brushed micro-denier polyester fleece for lightweight, strength, and durability. This unique base layer bottom is for those requiring the warmest possible layer for winter activities, hunting, fishing, or mountain sports, just to name a few. 
These base layer pants are exceptional at keeping you warm in extreme conditions and guaranteed to keep you hotter than a chilly sprout!
Fit Tip: Hot Chillys La Montaña Bottoms are designed to follow the boy and fit close without spandex and they have a front fly.
Features of this heavyweight long underwear: