Product description Anti-fog lenses offer outstanding clarity. UV Protection reduce the harmful impact of UVA/UVB. Wide panoramic vision enhance your swimming experience. Smoke lens reduce glare and enhance your visual comfort. Polarized Lens - Offer superior glare protection, reduce glare and reflection of the sun. Ideal for open water swimming and bright indoor pools. Smoke Lens - Designed to provide maximum brightness and wide HD vision, suitable for indoor/outdoor swimming. PERFECT FIT Soft & Sturdier silicone 3 sizes flexible nose bridge Snug fit for different face SPEED-FIT ADJUSTMENT Adjustable bands Anti-slip dual strap Reduces pressure on head PROTECTIVE HARDCOVER CASE Secure center zip lock Hook for easy portability 3D ERGONOMIC DESIGN Excellent suction Outer eye fit Superb comfort & Leakproof NOTICE: ABOUT THE ANTI FOG 1. Please avoid touching or wiping the insides lenses, or this may damage the anti-fog coatings. Before swimming, swaying the goggles slightly in the water to activate the anti-fog function. Swim goggles have a limited anti-fog life. With proper care, the anti fog coating will work longer. Use anti fog spray once the anti fog function disappears, or take a small drop of shampoo and gently rub it over the surface of the lens and rinse it out. Wash the goggles with cold water after each use and do not use it in the heat (sauna,hot spring, hot shower) Advance curve and HD lens provides wide vision and better light transmission and clarity. 3D double seal frame provides excellent fit and water resistance. Outer eye fit offers a comfortable fit for a wide range of faces.