Improved protection and fit. Comes with a head cover over the top of the head to the back of the head (sponge thickness: approx. 0.5 inches (13 mm)); Head cover type from the top of the head to the back of the head. Comes with a 0.5 inch (13 mm) thick sponge for added protection and a more secure fit. Improved fit and does not slip easily. Clear Guard Lightweight, Non-Contact Back, Velcro Closure