The VIEW V-640ASA Curved Lens Fitness Swim Goggles provides a comfort fit. the thin groove structure can handle unevenness of the face that varies from person to person. The round shaft fitting of nose belt corresponses to the left-right difference of the face. The curved lens design provides a wide field of vision. New Speedy Fit technology lets you easily adjust the strap with only one hand. New SWIPE Anti-Fog technology provides anti-fog effects 10 times longer. About this item SWIPE ANTI-FOG TECHNOLOGY: VIEW's SWIPE anti-fog system uses a water layer to prevent fogging. Simply swipe the lens 5 to 10 times with your finger to restore clear vision. This advanced anti-fog treatment lasts up to 10 times longer than traditional solutions. UV PROTECTION: Offers excellent protection against harmful ultraviolet (UV) rays, providing enhanced safety for your eyes during outdoor swimming. HIGH GRADE SILICONE: VIEW's high grade silicone seals and straps offer the softest, most pliable and longest-lasting straps available on the market today. The silicone resists stretching and fatigue from prolonged use in chlorine, reducing leakage and replacement. SPEEDY FIT: The length can be adjusted with the slider while wearing the goggles. Easily tighten and loosen the strap with one hand. CURVED LENS: Provides a wide field of vision by increasing peripheral vision in the water › See more product details