Material:TPU frame + PC lens with high rigidity, not easily deformed or broken. UV400 protection PC, block out the harmful ultraviolet light, reduce light intension, protect your eyes. Elastic headband strap is adjustable and skidproof, you can loose or tighten the band to adjust the size, tightness and comfort, both men and women to wear. Used in a variety of occasions:Perfect to use them when you are stepping on your skis or snowboard, skiing, skating, climbing, riding on your motorcycle/mountain bike, skydiving, bungee jumping, playing shooting games, doing an experiment in a lab, working in a construction site or having a snowball fight. Get rid of the fear of wind, dust, cold air, snow, sunshine and harmful lights. Lightweight, durable, breathable, warm, protect from winds, snow, strong light etc. High Cost Performance - High quality TPU frame with best impact-resistance and three-layer foam for comfortable wearing. And the lens with UV400 Protection Anti-fog, Explosion-proof, Double layer lens, Mirror Coating.