Designed to wick away moisture in an efficient and fast way. Ideal for high intensity activities. Open lateral holes in the cap to hold sunglasses securely when not in use. Strategically placed laser cut holes or lateral openings to enhance head ventilation. Dark underbill reduces glare to keep eyes protected. Crown: 100% Polyester, Undervisor: 100% Polyester, Adjustable strap: 100% Polyester, Inner sweatband: 100% Polyester, Side mesh panels: 100% Polyester Product Code: 125423. 334.