Double-knit fabric is soft, stretchy and breathable for superior comfort and mobility. Waterproof woven overlay on the front for greater durability and protection from adverse effects. Brushed fleece lining on the front for more warmth without excess bulk. The material wicks away sweat and dries very quickly. UPF 50+ protects the skin from the sun's harmful rays. Secure zip pocket on the sleeve and 3 mesh pockets on the bottom. Built-in thumbholes help keep the sleeves in place while providing quick and easy access to the watch. Odor control technology minimizes odor.