Handy, soft neoprene mask strap cover prevents hair from tangling. Keeps mask strap in optimum position for comfort and security. Cool and stylish, the Tusa Neoprene Mask Strap Cover is a must-have for any water adventure. The TUSA neoprene mask strap Cover can be used on virtually any mask strap to help 'glide' the mask strap over your hair and the back of your head. Two handy positioned internal velcro tabs ensure the cover stays in position just where you need it.