Limited Edition SF Marathon Headwear. Ventilator mesh side panels for enhanced cooling; lightweight wicking woven poly panels; soft poly mesh wicking sweatband; adjustable back snap buckle with tuck in pocket; black underside bill to reduce glare; curved bill; machine washable; one size fits most. From Boco.Care: No fabric softener, no iron, wash inside out with like colors, mild detergent only. Item ID sfnhC318