Discover the most advanced arena unisex triathlon goggle, the Cobra Tri Swipe Mirror equipped with arena's revolutionary Swipe Anti-Fog technology. These fogless goggles for adults are perfect for triathletes and regular 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 3D gasket provides optimal vision with no water flowing on the polycarbonate mirror lenses. Delivered with three interchangeable nose bridges for perfect customization to different face and nose shapes. The split strap is individually adjustable for a secure and comfortable fit. These triathlon goggles for swimming are ideal for triathlon and open water. This style is available with either light mirrored lenses for indoor swimming or dark mirrored lenses for outdoor swimming.