The Alder Surfboard Sock / Stretch Cover is made from a stretchy towelling material and has a reinforced 600D Polyester nose protector and drawstring closure at the tail. The perfect way to stop your surf wax and sand contaminating the inside of the car and a must-have for overseas trips when you don't want to drag your bulky travel bag to the beach. A stretch cover surfboard bag won't stop your board from getting dinged but it will offer some protection from the suns harmful rays.