Zionor RX Prescription Swim Goggles, G3 Optical Corrective Swimming Goggles Leakproof Anti-Fog, 100% UV Protection Nearsighted,Tinted Outdoor Swimmer Hypoallergenic silicone material with big goggle frame gasket provides solid seal and comfortable wearing experience. Substantial and durable swimming goggles for all kinds of swimmers. Shatter-resistance, 100% UV protection and anti-fog features give clear and wide vision under the water. No more irritating when swimming or have fun in the pool or lido. Easy adjustable strap for different head sizes and stay in place, loose-free. Goggle fits well with eye socket without uncomfortable keeping water and chlorine out. Different prescription diopters: -2.0, -2.5, -3.0, -3.5, -4.0, -4.5, -5.0, -6.0, -7.0, -8.0, -9.0, -10.0 ZIONOR unique guarantee: From pre-sales to after-sales, ZIONOR dedicates to provide the best customer service on Amazon or official website. We hope you are not only thrilled by our product, but also the superior customer service from us.