Discover the most comfortable mirrored racing goggle, arena's Cobra Core Swipe Mirror with revolutionary Swipe Anti-Fog technology. These FINA-approved goggles for adults are designed for competitive swimmers. arena's Swipe Anti-Fog technology lasts ten times longer and can be easily reactivated. For reactivation, gently swipe the inner lenses five times with your fingertip while the goggles are in the water, making sure there is no dirt on the lenses while doing so. Do this every time the lenses become foggy to enjoy clear vision for longer. The hydrodynamic low-profile lenses minimize water drag and offer wide vision. Delivered with five interchangeable nose bridges for perfect customization to different face and nose shapes. The dual strap is easily adjustable at the back of the head and ensures a secure fit, even on starts and turns. These goggles for swimming are PVC free. This style is available with clear lenses for low-light environments and for those who prefer maximum brightness or dark lenses for bright environments or those who prefer maximum light shielding.