This is the Scubapro 2.5mm Neoprene Mask Strap Features: Great for divers with long hair Helps protect against ripping of hair Great for locating your buddy underwater Enjoy your dives wearing a mask decked out with one of these new, ultra-comfortable neoprene straps. Gone are the days of tangled hair and twisted headbands, these straps make quick and easy work of donning a mask and are available in a choice of colors.