Whether you're running, hiking, or enjoying a brisk morning walk, the On lightweight Climate Shirt Men provides warmth and effectively wicks away sweat. Quarter zip closure for effortless on-and-off wearability Effectively wicks away sweat Thumb hole design  Side zip pocket for convenient storage of essentials Reflective details ensure safety in low-light conditions Provides warmth in cold weather and keeps you cool in the heat Size and Fit FIt: Close Materials Main Materials: 100 % recycled polyester  Pockets: 82 % recycled polyaide, 18 % elastane