The Sporti Optical Pro II Goggles are specially designed for corrective vision while swimming, and come in a variety of colors to fit your swimming mood. Features Anti-fog UV protection Universal eye socket design for ultimate comfort Available in diopters -2.0 through -8.0 Adjustable straps Soft silicone gasket Includes 2 sizes of interchangeable nose pieces for custom fit Note: Do not rub the inner side of the lens as it will damage the anti-fog coating Details Materials: Lens: 100% Polycarbonate; Straps/Gasket: 100% Silicone Sun Protection: Yes Adjustable: Yes Country of Origin: Imported