TPU FLEXIBLE FRAME WITH CYLINDRICAL LENS: The Unigear ski gogooles' ergonomic streamlined frame adopts flexible TPU material and face foam with Fleece Lining for an optimal and comfortable fit, which can do a great job of protecting you in a crash or tumble. cylindrical lens, it is for superb optical qualities and minimal distortion and don't worry about visual fatigue if you wear them for a long time.ANTI-FOG AND VENTILATION: The snowboard goggels adopted double lenses, which significantly reduce fogging and create a heat barrier compared to its counterpart of single lenses. The outer lens is made of optical grade PC that is anti-scratch and impact resistance, the inner lens is imported from and fights fog with the coated premium CA material. ilation comes from the top and bottom of snow goggles. The more air that moves through, the less fogging will occur.HELMET COMPATIBLE FUNCTION: The ski goggles are available for fitting seamlessly with to most popular s and you can enhance a fit through adjusting the strap whether youre wearing a hat or a . Make sure you have a safer day on the mountain.100% UV400 : Our Unigear snowboard goggles will not only save you from the harmful rays of the sun, but also save you from having to care for overly-sunburnt skin in the long run. By getting our goggles offer you strong protection against UVA and UVB rays of the sun, so enjoy yourself in the snow.If you have any quality problems within 1 year, you can contact us at any time for after-sales service.