Swimming Goggles, Swim mask Anti-fog Anti-shatter Uv Protection for Men and Women (Swim Goggles) Goggles fit comfortably around your eye sockets and don't have to create too much pressure to keep the water out. Because the gaskets around the eyepieces are thick and curved in a way that will probably fit most faces The swimming goggles cushion and headstrap is made of 100% silicon which has high water and temperature resistance The lenses are made of PC, UV-protection material, it protects the eyes from harmful ultraviolet rays and suitable for outdoor use The inner surface of the lenses is processed with special coating for anti-fog effect, which enhances sight claity The double headstrap design to provent sliding