The only cold weather Under Armour ColdGear Legging Thermal Underwear you'll ever need, with a compression fit that's perfect under your outerwear, or your waders. Double-sided ColdGear technology starts at the soft inner layer, channeling moisture to the outer layer, where rapid evaporation takes place. Working fly and performance waistband enhance functionality and comfort. 66% 6.6 oz Nylour / 19% PolyArmour / 15% Elastane. Imported.