Warm and comfortable, the force reydell flannel fights odors and evaporates sweat faster than you can sweat. Hidden, zippered chest pocket. Made from 4.4-ounce, 60 percent cotton/40 percent polyester flannel with fastdry technology for quick wicking, it fights odor, has patented 37.5 technology that works with your body to keep you comfortable, front chest pocket with invisible zipper closure, vented back yoke for breathability, adjustable button closures at cuffs and force heat transfer logo on back yoke.