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 Lightweight, 4-way stretch construction improves mobility and maintains shape Anti-microbial technology fights odors to keep your gear fresher, longer Raglan sleeves and flatlock seams unlock mobility and eliminate chafing Rolled forward side seams for a more comfortable fit Streamlined mock neck delivers superior coverage Polyester/Elastane Imported