UV Protection Mirror Coatings: filter out irregular lights to avoid glare, protect your eyes from harmful UV rays. Making you see clearer and offering a obvious stereoscopic vision effect. It is a ideal choice for outdoor swimming, surfing and other open water related sports. Full Silicone Frame & PVC Free: hypoallergenic, soft and durable, adopts to different face shapes with ultimate comfort; Self-adjusting TPR nose bridge piece ensures a comfortable fit and won't hurt your nose bridge; Anti slip dual straps reduce force to your head and increase the comfort. Superior Waterproof, NO Leakage: 3D silicone gaskets (made of safe&allergy free silicone) provide comfortable buffers and perfect watertight seals against eyes. No painful chlorine or salt water ingress. No worry about leakage and no raccoon eyes. Anti Fog Curved Lenses & Streamline Design: impact resistant PC lens with latest environmental anti fog chemicals technology, offer you a 180 unrestricted clear and comfortable vision without distortion. Streamline Design enhances your smooth swim performance. The safety glass technology also protects the lenses against falling and splintering.