Run with the wind as fresh air streams over your head in the self-cooling RRS Air Flow Hat. Designed with lightweight wicking woven polyester material on the front, top, and side panels to keep your head cool while wicking sweat away. The adjustable snap buckle helps fit the hat snugly on heads of all sizes. The curved bill has a black underside to reduce glare and keep you focused on the trail or road in front of you.