Eforstore Motorcycle Googles Raf Aviator Vintage Pilot Biker Cruiser Pilot Flying Goggles Motocross Cruisers Windproof Sun UV Wind Eye Protect Helmet Mask Eyewear Sports Protective Safety Glasses Material: ABS and Sponge Frame, High elastic cotton Strap, PC Lens. UV protection good quality plastic Lenses. Could use with your glasses size under 14*3.5cm. Adjustable non-slip and common high elastic strap; can be adapted to any size of head. The frame is higher hardened surface, and the stronger elasticity bring less deformation or any broken.