Real Full Mirror Tech ♨--- Comprehensive REVO coating on outer lens PC lens with edge to edge mirror reflection, provides 100% UV400 protection and scratch resistance performance. The internal lenses imported from Italy can fully play the role of anti-fog. | Wear Over Glasses (OTG) ☃--- SPOSUNE Ski Goggles features a OTG (over glasses) design that lets you wear your glasses under the goggles. 180-degree panoramic view design provides a super clear vision and less visual interference, provides a truly unobstructed & clear view of the slopes. | High Cost Performance ☄--- High quality TPU frame with best impact-resistance and three-layer foam for comfortable wearing. The lens is made from shatterproof ultra strong poly-carbonate material. Suitable for different winter sports: ski, snowboarding, snowmobiling and etc. | Extra long strap ☸--- Adjustable strap with comfortable wearing experience and giving you great compatibility with most adult and youth helmet. | Ventilation ❉--- Mirror air holes and Frame sponge ensure great ventilation. Ski goggles provide smooth air-flow system which brings fresh air, reduce fogging and exhaust moisture quickly and effectively.