Plastic frame Glass lens Anti-Fog Coating coating ANTI-FOG/ANTI-UV/WIDE VISION: Fogging during swimming is really annoying. The high-tech Anti-Fog and UV coated lenses make unrivaled clarity with no misting or glare. Do not touch the inside surface of the lenses by hands or sharp tools, or it will damage the lenses, damage anti-UV and fog function. ULTRA-SOFT SILICONE SEALS: No leaks at all The ultra-soft silicone seals create a perfect seal around eyes, ensuring no water in. It fits comfortably and never gives you the goldfish eyes. For kids, the impact-resistant PC lenses keep the safety of children. CRYSTAL CLEAR VISION: The anti-fog treatment coated lenses with 180-degree peripheral vision let you see clearly without blurring or distortion. Not as other colored lenses, these lenses are really transparent/crystal clear. ONE BUTTON CLICK and COMFORT: Super easy to adjust Well-designed clasp makes it easy to put swimming goggles on and off through one press.Even children can stand on their own feet and adjust the strap by themselves. Flexible silicone frame and gasket can provide kids with maximum comfort. The adjustable straps can make every child remain dry around eyes and keep hair snag-free. 12 MONTHS WARRANTY: PACKAGE includes: swimming goggles2, portable mesh bags1, ear plugs4, user guide and 12 months warranty. If you came across any problem while using our swimming goggles, please do not hesitate to contact us at any time, we will provide you with excellent after-sale service. And we will try our best to help you with it.