ColdPruf Men's Performance Base Layer Long Sleeve Shirt - This single layer high PERFORMANCE garment has been developed with 96% CPT - COLDPRUF TECHNICAL Fiber Performance Polyester and 4% Spandex for SUPERIOR FIT, WARMTH, MAXIMUM DRYNESS and ODOR CONTROL. CPT fibers have been engineered to give the highest rate of MOISTURE MANAGEMENT and EVAPORATION allowing your body to achieve and maintain it's peak performance. This garment has been designed for weather conditions that are cold to very cold with medium to high activity. Single Layer Flat Seamed Drop Tail Rib Cuff Four Way Stretch Tagless Wicks & Evaporates Moisture Antimicrobial Style: 98