Under Armour Women's ColdGear Infrared EVO Scrunch Neck ColdGear Infrared uses a soft, thermo-conductive inner coating to absorb & retain your own body heat Dual-layer EVO ColdGear construction combines a smooth, fast-drying exterior with a brushed, heat-trapping interior Under Armour Scent Control technology traps & suppresses odors so you're less detectable & more lethal Signature Moisture Transport System wicks sweat to keep you dry & light Anti-microbial technology fights odors to keep your gear fresher, longer