TUSA Sport UC-0106 Elite Adult 2-Window Mask & Snorkel Set, Black/Black

["PURE SILICONE: The snorkel mouth-piece and mask skirt is made of high quality food grade silicone. Comfortable, durable, & long lasting.","CLEARVU TEMPERED GLASS: Provide superior clarity, color, transmission of light and safety over standard glass.","EZ STRAP and BUCKLE SYSTEM: Allows mask to be quickly and easily adjusted with minimal effort. Easily adjust the strap by pinch and move motion to adjust slider.","HYPERDRY SEMI-DRY TOP: Keeps the main snorkel pipe dry by ejecting water through an independent escape pipe.","HIGH FLOW PURGE VALVE: A large diameter purge valve for simple, quick clearing, reducing the amount of water remaining in the mouth-piece."]