?MULTIPLE PROTECTIONS: OUTLIFE Ski Goggles is well designed in double layer lens for anti-fog, anti-scratch, anti-wind, anti-dust and 100% UV protection when skiing, snowboarding, motorcycling, hiking, snowmobiling and other outdoor activities. ?HIGH IMPACT RESISTANCE: Dual layer lens, soft TPU frame, and triple layer foam altogether ensure a safe skiing or snowboarding and protect you against impact. Inner layer foam is skin-friendly. ?DETACHABLE LENS: The goggles adopts clip-on design which is more stable than magnetic design and will not fall easily. Assembling instructions: Fit the lens to the middle of the frame first, then the other points. ?OTG (OVER-THE-GLASSES): The ski goggles features an OTG design that allows you to wear your glasses under the goggles. It fits glasses up to 5.5cm wide, 1.4cm tall. Frameless design provides a wider view. ?UNIVERSAL HELMET COMPATIBILITY: The ski goggles has an elastic strap that fits most helmets for adults and teenagers. Non-slip strip helps the strap to stay stable.