UV PROTECTION & ANTI-FOG: The high level vacuum plating lenses offer higher waterproof performance and UV protection. And the anti-fog coating on the surface of the goggles prevents moisture from forming fog on the inner side of the lens. Let kids safer even under the water. COMFORTABLE & NO-LEAKING: Soft and flexible silicone gasket offers maximum comfort and ensures a leak-proof seal, your kids will be more willing to wear this safer and comfortable swim goggles. IMPACT-RESISTANT: Compared with traditional plastic lens, this swimming goggles are thinner and lighter. Impact-resistant and scratch resistant, helps your kids have better performance under water. EASY FOR KIDS: The adjustable strap is very convenient for kids to adjust the swimming goggles to fit snugly for their heads and it is also very easy for them to wear or take off. CLEARER VISION: Wider silicone suction cup is more comfortable to wear, providing clearer under-water sight for kids. NOTE: The anti-fog function will be weakened after repeated use, you can spary antifoggant to prevent fogging. UV transmission is less than or equal to 30%.