Barracuda Swim Goggles Bolt &ndash; Split Lenses Patented TriFushion System, Anti-Fog UV Protection, Easy Adjusting, Lightweight No Leaking, Competition Racing for Adults Men Women #90255 High quality anti-fog polycarbonate lenses with UV protection for crystal clear visual field: You can see clearly underwater and be fully aware of your surroundings to enjoy swimming as long as you want while swimming for training and recreation. Hydrodynamic and low-profile frame is ideal for racing. Revolutionary split lens design enhances forward vision and allows swimmers to see forward and down without moving their heads. Patented TriFusion system gaskets provide positive pressure and confirmable fit. The low-pressure design is meant to reduce goggle marks and damage to under-eye skin. Dont worry about goggle marks after swimming!!! Super soft chlorine proof silicone rubber headstrap with easy-to-adjust back clip for fast and comfortable fitting: Adjusting the strap tightness is easy. Pull both strap ends outward through horizontal openings to desired length. To loosen, pull the back clip vertically away from the head. Comes with three different sizes of flexible interchangeable nose pieces. Also, a free carry case included so that you can keep the goggle from dust and scratches after use.