Dyna Adult 5-Piece Dive Set - Adult Size M/L Men's 4.5-8.5/Ladies 5.5-9.5. Mask. Dual Lens Tempered Glass Construction provides a wide-angle view, enhanced comfort and visual clarity. Full-face feathered silicone gasket assures a leak-free fit. Comfortable silicone split head strap for precise fit and comfort. Latex-free, no skin irritation, hypoallergenic. Snorkel. Angled-barrel with adjustable mask retainer clip. Vented dry top keeps water out when diving below the surface. Automatic purge valve systems help clear out water. Latex-free, no skin irritation, hypoallergenic. Fins:. Comfortable foot socket. Adjustable strap secures fin in place. Durable TPE/PP construction. Mesh Bag:. Perfect for travel and storage. Allows set to air dry