RACING GOGGLES: arena Cobra Ultra Swipe goggles are racing goggles equipped with lenses that provide clear vision thanks to state-of-the-art Swipe anti-fog technology ANTI-FOG SWIPE TECHNOLOGY: every time the lenses fog up, reactivate the anti-fog feature by rubbing the inside of the lenses five times while holding the goggles underwater. Thanks to swipe technology, the anti-fog feature lasts 10 times longer COMFORTABLE AND SAFE: swimming pool goggles adaptable to the shape of the face and nose thanks to the 5 interchangeable nose bridges; the double adjustable strap and the groundbreaking design on the temples ensure a stable fit at all times FOR COMPETITIVE SWIMMERS: World Aquatics (FINA) approved arena racing goggles designed for competitive swimmers and triathletes; To minimize friction with water, the lenses have a low profile and are mirrored with UV protection COMPOSITION: these women's and men's swimming goggles are made of 70% Polycarbonate, 20% Silicone, 10% Thermoplastic Elastomer, made without PVC MEDIUM-DARK LENSES: adult goggles equipped with medium-dark lenses, optimal for swimming in all conditions and variable or intermediate light levels. The ultimate in racing goggles, our Cobra Ultra Swipe design lets you compete, train and swim for long periods without your goggles fogging up or moving. This highly advanced style features a special lens shape for complete vision and ideal glide. It's enhanced by our Swipe anti-fog technology, which stays clear up to 10 times longer. When they start to fog up, simply slide out the inner lenses while the goggles are underwater. Better technology, better performance and FINA approved.