Haiwa Outdoor Anti-fog Mirrored Silicone Seal Watertight Swim Swimming Protection Plating Glasses Anti-Fog Polycarbonate lenses provide superior protection from harmful ultraviolet rays,It suitable for outdoor user.UV-protection material feature resistance,Waterproof and compression resistance.Lens surface with fashion coating color your goggles. The headstrap is made of 100% soft and elastic silicon,comfortable to wear,as well as prevent eyeglass slipping during swimming.and the adjustable side buckles offers different size options within easy reach. Lens is processed with special coating for anti-frog effect,which enchance sight clarity.Ipow goggle offers 180-degree,wide-angle vision technology to make you see clearly in water Soft silicone construction for a cushioned fit free from annoying leaks and uncomfortable pressure.