?ANTI-FOG & CLEAR VISION: Anti-Fog prevents the condensation of water in the form of small droplets on a surface which resemble fog. Blurry vision is history with the special anti-fog coating technology. To preserve the anti fog coating, avoid wiping the inner flat lenses. Great anti-fog technology ensures crystal clear vision. | ?LEAKPROOF DESIGN & WATERTIGHT: Improved seal leak resistance & excellent suction. Soft memory silicon gasket and double-deck cushion ensure a snug fit on different face shapes and keep water out of the swim goggles so that you can swim freely without distractions. | ?COMFORTABLE: Ergonomic design with soft silicone gasket, 3 size nose piece and adjustable strap fit the unique contours of your face, giving you comfortable wearing experience. | ?UV PROTECTION: Special treatment of UV protection on outside and inside the flat lens, cut the sunlight reflection under the pool. Superb protection from harmful UVA and UVB rays while swimming outdoors. | ?SWIMMING GOGGLES FOR ADULT AND YOUTH: These goggles&it is marvelous and the straps are super easy to adjust in seconds which can fit for various sizes of heads comfortably. With two pairs of Seago swim goggles, you can save your budget, and wear the pool goggles with your friends to swim together.