The innovative Arena Unisex Triathlon Swim Goggles Cobra Tri Swipe Mirror are ideally suited for triathletes and open water swimmers. The revolutionary Swipe anti-fog technology lasts ten times longer and can be reactivated by gently wiping the lens with your finger. To do this, carefully wipe the inside of the lenses five times with your fingertip while the goggles are in the water. Simply repeat this procedure whenever the lenses start to fog up again. This ensures clear vision for an extended period. The small frame profile and narrow seal provide a stable fit in the eye socket, resulting in minimal water resistance. The package includes three interchangeable nose bridges, allowing for a customized fit to different face shapes and nose sizes. The double head strap can be perfectly adjusted via a buckle at the back of the head, ensuring a secure fit even during starts and turns. The goggles are equipped with dark mirrored lenses, UV protection 400, and are PVC-free. The sturdy Arena Goggle Case for protecting and safely transporting the goggles is sold separately.