PERFECT FIT The adjustable strap with quick-release bucket makes you easily put on and take off the adult swim goggles. Tighten or loosen the strap to fit your head size. The swimming goggles can be easily adjust to the size with the strap ratchets. ANTI FOG&UV PROTECTION Each lens is carefully coated with the optimal amount of advanced anti-fog so that can offer you a clear and long distant view under water swimming.The outer surfaces mirrored coating lenses with UVA/UVB protection which can help protect your eyes from being hurt by UV and bright lights.Convenience for you both indoor and outdoor swimming. NO LEAKING SILICONE SEALS Our swim goggles with flexible silicone gasket frame construction to ensure a leak-proof seal. It gently cushion your eyes, leaving no red marks and creating no discomfort. ERGONOMIC & COMFORT Comfortable, headband is made of soft and elastic silicon, Moderate gaskets fit for a wide range of faces. With a less restricting feel around eye sockets, it offers high degree of comfort and forms a solid seal so you never have to worry about water seeping in or red itchy eyes.