The Under Armour Women's ColdGear Authentic Mock Neck is a high-performance base layer top designed to keep you warm in cold weather conditions. It is made from a blend of polyester and elastane, which provides excellent stretch and flexibility. The ColdGear fabric technology traps heat and wicks away sweat, keeping you dry and comfortable. The mock neck design offers extra coverage and protection against the elements. Whether you're skiing, snowboarding, or engaging in other winter activities, this top is a reliable choice.