Skit - Adult Swim Swimming Prescription Goggles Anti Fog Tinted Lenses UV Protection Waterproof with Free Case for Men Women Youth The lenses are made of High-class PC glasses,100% UV protection,and Anti-fog coated, and watertight; Strap adjustment is quick and easy. The headstrap is made of 100% soft and elastic silicon, comfortable to wear, as well as prevent eyeglass slipping during swimming. The adjustable side buckles offers different size options to fit everyone. Ergonomic completely sealed silicone protective circle design can help to reduce the pressure around the eyes with good non-fogging and anti-UV effect. Comes with 3 interchangeable nose pieces - Small, Medium, & Large, offers different size options (Perfect for Adults, Kids to wear) Our swimming glasses prescription have been carefully developed with custom diopter level designed for extra clarity under water, so you will enjoy great results every time. Myopia diopter -2.00 (200 degree)