Next-to-skin without the squeeze. Dual-layer EVO ColdGear construction combines a smooth, fast-drying exterior with a brushed, heat-trapping interior ColdGear Infrared uses a soft, thermo-conductive inner coating to absorb and retain your own body heat Signature Moisture Transport System wicks sweat to keep you dry and light Anti-microbial technology fights odors to keep your gear fresher, longer Smoke-free/pet-free house