Dual-layer fabric with an ultra-warm, brushed interior & a smooth, fast-drying exterior Stretch-mesh back & underarm panels provide strategic ventilation without sacrificing warmth 4-way stretch construction moves better in every direction Material wicks sweat & dries really fast Anti-odor technology prevents the growth of odor-causing microbes Ergonomic design keeps seams off of high abrasion areas Mock neck construction for added coverage & warmth Dropped, shaped hem