Dual-layer fabric with an ultra-warm, brushed interior & a smooth, fast-drying exterior .Ribbed center back panel .Material wicks sweat & dries really fast .4-way stretch construction moves better in every direction .Anti-odor technology prevents the growth of odor-causing microbes .Generous 1/2 zip front with stand collar .Raglan sleeves .Thumbholes keep sleeves secure & help seal in your body heat .Shaped, drop-tail hem offers superior back coverage .