Snorkel Keeper keeps your snorkel tube close as you move through the water column. It also helps to reduce the amount of water that enters your snorkel. By attaching the snorkel to the back of the mask strap, the top of the snorkel is much higher above the water. Made with premium molded silicone, this snorkel keeper has a flexible construction to fit most mask and snorkel configurations. Easily attaching to your mask, this snorkel keeper prevents hair entanglement and snorkel loss in the water.