Eforstore Snow Googles Windproof UV400 CS Snowmobile Bicycle Bike Motorcycle Ski Goggle Eyewear Protective Glasses Material: ABS and Sponge Frame Lens: Polycarbonate Weight :71g Adjustable non-slip and common high elastic strap, can be adapted to any size of head. Eye mask frame is equipped with ventilation system, increase in air circulation and comfortable during operation