Kids'Cartoon Crab Anti Fog Watertight UV Protection Swim Goggles, Boy and girl's Swimming Gear Silicone lens ring and head band, comfortable to wear, and effectively prevent water. Using PC, UV material for lens,with strong UV resistance, keep eyes protecting for outdoor using. The inner layer of the lens has been used for anti fog treatment to ensure clear clarity vision when using. Non-slip headband design, to effectively prevent falling.