All the functionality of the Original multifunctional headwear plus built-in-sun protection, blocking up to 95 percent of harmful rays. The COOLMAX Extreme fabric offers moisture management at the fiber level, and Polygiene helps control odor. UV multifunctional headwear deflects ultraviolet rays whether on the water or off the trails. Coolmax Extreme Fabric 95% UV Protection Polygiene Odor Control Moisture Management Wind Resistant Dries Quickly 100% Seamless