Under Armour Women's ColdGear Authentic Leggings are highly rated base layer bottoms that offer both warmth and style. These leggings are made from a blend of polyester and elastane, which provides a soft and stretchy fit. The ColdGear technology traps heat and wicks away sweat, keeping you warm and dry during cold weather activities. The leggings have a compression fit that supports your muscles and reduces fatigue. With their sleek design and excellent performance, these base layer bottoms are a favorite among active women.