<br><b>Excellent Antifog and 100% UV Protection</b> <br>The inner lens is made of Italian smart ventilation system material and the outer lens come with super-hardening technology to enhance enchanced anti-scratch performance and give longer & better anti-fog performance.<br> <br><b>Helmet Compatible Adjustable Strap</b> <br> The silicone-backed strap allows for helmet compatibility for any helmets.<br> <br><b>Attention for Fog-Up</b>:keep no gaps between the helmets and goggles.Wearing a cloth hat (either with or without a brain-bucket) interrupts this flow, blocking the goggle's top vents. Buy a good helmet with goggle vents, ditch that goofy stocking cap, get rid of your gaper gap, and everything will be fog-free. And if your mouth is covered with you breathing into a fabric that's tucked under the goggles, they'll always fog in that scenario.<br> <br><b>Warmm Tips.</b> <br> 1,Never wipe the Inner lenses with cloth in order not to damage the anti-fog layer.Clean directly with water gently and Airdry if the inner lenses get dirty. <br>2,Carefully clean the Outer LENS with the pouch gently. <br> 3.Store the goggles in a small bag or box instead of desk or car.<br>4,Avoid Cosmetics to get stains or discoloring of the frame foam.<br>5,Air-dry the goggles for every snow sport.Never use your finger to clean the lens.<br>