Mares Mask Strap Cover to cover the silicone strap on your mask which then helps to 'glide' the strap over your hair/head making it more comfortable.

To fit the strap cover just release the silicone mask strap from one side of your mask and feed this loose end through the neoprene cover. Once the loose end re-appears re-connect the silicone strap to your mask.

With the benefit of being neoprene it also provides a little extra buoyancy to the mask just in case you drop it in the water !