Anti-fog Coated: The inner surfaces of the lenses are anti-fog coated by the latest Environmental Treatment Technology which enhances the anti-fog ability of the mirrored swimming goggles and does no any harm to your body. Anti Leaking: silicone material and Ergonomic design used on the goggles ensure a snug fit on different facial forms and never allows water leak in, a good ideal gift for adults men women, kids, boys, girls, youth swim goggles. Super Comfortable And Shakeproof: Of course! Flexible silicone frame and improved nose piece provide extreme comfort that never hurt your nose or leave a mark on your face. Polycarbonate lenses stay strong even in the toughest conditions. Stylish Look: Absolutely good looking! With the fashionable color, we strongly believe that the goggles will bring you to the high-fashion land and make you stand out of the crowd. Tips For Preventing Fogging: All of our goggles lenses are covered by an anti-fog coating. With proper maintenance, you can help it work longer. 1. Always remember to wet the lens inside so the coating can work. Put goggles in pool water for a while before swim. 2. NEVER wipe the lens. 3. After swim, wash the lens with fresh water and then let it air dry. Item Name: Mirrored Swim Goggles; Main Material: Silicone, Polycarbonate(PC); Main Color: Blue; Mirror Width(Single): 55mm / 2.17", 30mm / 1.18"; Nasal Bridge Breadth: 25mm / 0.98"; Lens Barrel Length: 165mm / 6.50" Weight: 160g / 5.64oz; Package Include: 1 x Mirrored Swim Goggles.