Cobra Core SwipeThe innovative arena unisex Goggles Cobra Core Swipe are perfect for fitness and competitive swimmers and triathletes. The revolutionary arena Swipe Anti Fog technology lasts ten times longer and can be reactivated by swiping the lenses with your finger. 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 lenses become foggy to