Polycarbonate frame.Polycarbonate lens.Anti-Fog Coating coating.CLEAR VISION: The inner surfaces of the lens are anti-fog coated which enhances the anti-fog ability, and higher transmission rate only for visible lights which also protect kids valuable eyes.UV PROTECTION: swimming goggles unique UV protection treatment on lens protects kids eyes from the indoor reflected light and the harm rays of sunlight, so it can be used in the pool or outdoor swimming.WATERTIGHT & COMFORTABLE: uses high quality silicone material on our eye pads, which makes it super soft and comfortable. The ergonomic design can reduce the pressure on children's eyes. At the same time, with the gift of nose clip and earplug, it can effectively prevent water leakage.Easy to use ADJUSTABLE BUCKLE: Easy adjustment of the elastic strap and soft silicone seal ensures a comfortable and snug fit for most face types. The strap is easy to adjust between sizes and the quick release clasp on the side means you can fit them in seconds without getting them tangled in your hair.JOYFUL SWIMMING TIME: With this professional swimming goggles, kids can enjoy a happy swimming time without any doubtThis stylish goggles will protect their eyes comprehensively. provide 12 months product guarantee and technology support, if you have any problem please contact us, we will help you out as soon as possible.