Made to be fast: The most comfortable Cobra racing goggle with mirrored lenses and the revolutionary Swipe anti-fog technology for long-term clear vision and stylish hydrodynamic design When swim goggles become foggy, activate the revolutionary Swipe anti-fog protective film by gently swiping the inner lenses five times with your fingertip while the goggles are in the water These fogless goggles for adults offer wide vision and maximum comfort at top speed with hard mirror polycarbonate lenses that have a hydrodynamic low-profile to minimize water drag; PVC free Every pair features a dual strap that is easily adjustable and ensures a secure fit, even on starts and turns, and includes five interchangeable, adjustable nose bridge sizes for a tailored fit World Aquatics (FINA) approved and designed for competitive swimmers, these ultra comfortable swim racing goggles have dark mirrored lenses that are ideal for outdoor swimming and bright environments