Outdoorguru Tactical Goggle Airsoft X400 Wind Dust Protection Paintball Protective Goggles Motorcycle Glasses Black Grey Lens are constructed by high impact polycarbonate, anti-fog coating on the interior while anti- scratch coating on the exterior. The interior frame is coated with soft foam for comfortable wearing. Frame is made by bi-raw material, wearable and lightweight. It can fits all size of head with the elastically strap which is constructed by nylon fiber. It has bulk port between Spectacle frame and lensrelease heat from face more effectively and anti -fog treatment on lens surface Unique design, fit for various faces, the surface of glasses frame feels like human skin. It's also designed for helmet compatibility.