The laser-cut hex pattern in back allows ventilation and the button-less top gives an extra measure of comfort in the 100% polyester hat. Features a sonic-welded PING logo and an adjustable Velcro strap so one size fits most. - 100% polyester - Laser-cut hex pattern for ventilation - Button-less top for comfort - Sonic-welded PING logo - Adjustable Velcro strap