Dive in style with the Gemini - Adult Dive Combo Set. Perfect for adult divers, the mask's full-face silicone gasket and dual lens tempered glass construction provides a leak-free, wide-angle view for underwatrer visual clarity. Features a vented dry top to keep water out of the snorkel, as well as an automatic purge valve system to help clear water out when needed. What are you waiting for? Take the plunge with the Gemini - Adult Dive Combo Set.. Dual-lens tempered glass provides visual clarity underwater. Silicone gasket ensures a leak-free fit. Full-face liquid silicone gasket assures a leakfree fit. Pivoting Quickfit buckle strap allows for easy adjusting. Latex-free, hypoallergenic. SNORKEL. Angle barrel with adjustable mask retainer clip. Vented dry top keeps water out when diving beneath the surface. Automatic purge valve systems helps clear out water. Latex-free, hypoallergenic