Light as wind to protect you against wind A feather-light cycling jacket engineered for maximum protection against wind. Uyn ULTRALIGHT WIND jacket is the ideal companion for every summer and mid-season ride in changeable weather, or when facing long and fast descents. Extremely compact, it folds into its own pocket and takes away minimal space in your shirt pocket: ready for anything. Unlike traditional windproof jackets, the Uyn ULTRALIGHT WIND jacket is built with proprietary FLOWTUNNELS technology that helps regulate body temperature and wicks away sweat very effectively.