ANTI-FOG & WIDE CLEAR VIEWEach lens is carefully coated with the optimal amount of advanced anti-fog coating, it can stop the lenses from becoming steamy and offer you a clear and long distant view to focus on swimming under water. SUPER-SOFT SILICONE SEALS The silicone gaskets are super-soft and comfortable. They create a perfect seal every time due to their double-seal design, they are around the eyes, which can distribute the pressure evenly and provide a maximum comfort. 3D ERGONOMIC FIT DESIGN The goggles regard the type as washer, which draw on the mechanical principle of the thin shell structure, disperse the pressure effectively and it is comfortable to wear. EASY to USE with ADJUSTABLE CLASPEasy adjustment of the elastic strap ensures a COMFORTABLE and snug fit for most face types.