The swipe antifog technology applied to Arena's best triathlon goggles. Arena Cobra Tri Swipe Mirror goggles are the ultimate solution for triathlons and intensive swimming. This unique design stops the flow of water over the lenses for optimal vision, especially for long distances. The hard mirrored lenses protect eyes from glare, offer a crystal-clear view and are made to endure seasons of training. Equipped with special 3D Japanese TPE seals for a watertight fit and maximum comfort. Customize for a perfect fit with the adjustable split strap and interchangeable nose bridges. Triathlon swimming Swipe technology Adjustable split strap Materials 45% Polycarbonate, 30% Silicone, 15% Thermoplastic Elastomer, 5% Polyoxymethylene, 5% Polypropylene