IPOW Anti-fog Mirrored Silicone seal watertight Swim Swimming Goggles/mask with Uv Protection Plating Glasses + Premium Goggles Case (Blue) The Ipow goggles cushion and headstrap is made of 100% silicon,which has high water and temperature resistance,Waterproof,anti-fogging,compression resistance,abrasion resistance. The lenses are made of PC,UV-protection material with plating class.It protects the eyes from harmful ultraviolet rays and suitabble for outdoor user.The double headstrap design to prevent clasity The inner surface of the lenses is processed with special coating for anti-frog effect,which enchance sight claity. Ipow swim goggle offers 180-degree, wide-angle vision technology to make you see clearly in water 3 sizes interchangeable nose pieces:small ,middle and large.It can be adjusted according to the size and shape of your face to make you comfortable. Integral adjustment buckle:Integrate goggles with frame and it is more convenient. Prevent eyeglass slipping during swimming.