From the company that invented multifunctional headwear BUFF(r) UV multifunctional headwear delivers all the functionality of the Original multifunctional headwear then adds built-in-sun protection that blocks up to 95% of UV rays. The CoolMax(r) PRO fiber wicks moisture and dries fast for comfort on the move and the Polygiene(r) treatment resists odors so you can wear it more and wash it less.