Cool comfort with a little extra protection from the sun. The Ultralight Cap provides shade from the sun, great sweat wicking performance and an SPF rating of 30, resulting in a little extra skin protection on summer days. Designed to be worn under helmets, it is thin enough to fit without bunching and light enough to practically disappear when you put it on. A shorter brim compared to some caps for better upper peripheral vision when on the hoods or the drops.