Design: Leakproof, Anti-fog 4Shape: Fit most of , suit for round , oval , slender , melon , square and so . Seal: Shock absorption and pressure seal。 Straps: High flexible straps, adjustable. According to the 3D ergonomic design, it fits the eye socket comfortably, and the double-layer sealing silicone . Effective anti-fog, clearer vision. The tension of the buckle of the strap is adjustable, easy and convenient, and it is convenient and firm. Scenes: swimming pool, seaside, surfing. Package 1*swimming goggle。