RACING GOGGLES: arena Cobra Ultra Swipe Mirror goggles are state-of-the-art racing goggles featuring mirrored lenses and 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 5 interchangeable nose bridges; adjustable double strap and groundbreaking design on the temples ensure a stable fit throughout performance 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 DARK LENSES: adult goggles equipped with dark lenses, optimal for swimming outdoors or indoors and for those who prefer maximum light shielding