Dirty Bird Goggles Birdz Fits Over Black Frame Clear Lens. Rugged goggle great for motocross, BMX, ATV, etc. Upper and lower venting system to maximize air circulation inside the goggles which helps prevent fogging. Lenses with Anti-Fog coating are polycarbonate, shatterproof and rated UV400 to block out the harmful ultraviolet light. ATV, BMX, Motocross, Motorcycle, Off Road Goggles.