These premium racing goggles from Arena in yellow copper and black are the ideal companion for competitive swimmers, and also for triathletes and open water swimmers.Arena's innovative lenses ensure an aqua dynamic sealing on the cheekbones that reduce water turbulence and drag.The Arena Cobra Core goggles come with 4 interchangeable nose pieces so that you are able to get the best fit. The split head band can be quickly adjusted with the easy to use buckle and ensures a solid fit on start and turn.Like all arena goggles, the Cobra Core goggles feature UV protection 400 and is anti-fog treated and PVC free. Wide vision and maximum comfort at top speed, with mirror lenses. Now featuringthe best anti-fog technology available, that can be reactivated with a simple gestureand lasts 10 times longer. Features: Arena Cobra Core goggles Premium racing and training goggles Large field of view, low profile, optimal sealing Split head band for solid fit on start and turn UV protection, anti-fog treatment, PVC free Also for triathlon and open water Materials: Lens - polycarbonate Seal - Japanese TPE Strap - silicone