A two-layer fabric with an ultra-warm, brushed inside and a smooth, quick-drying outside. The 4-Way Stretch technology allows for better movement in every direction. The material wicks away sweat and dries very quickly. Ribbed side panel and cuffs for added flexibility and comfort. Practical front 1/2 zipper for easier dressing/undressing. Built-in thumbholes help keep the sleeves in place and trap heat. Raglan sleeves.