adidas Men's Adizero II Cap, Tech Steel Blue/Collegiate Navy/Clear Onix, One Size 100% Other Fibers Imported Lightweight, 6-panel performance cap Mesh provides ultimate air flow and moisture-wicking UPF 50 built into the fabric to guard against the sun's most harmful rays Reflective hook-and-loop back closure for visibility and adjustable fit Fabric :87% Polyester 13% Spandex Non-glare under visor for best vision while running and training