Dirty Bird JR Goggles Birdz Fits Over Blue Frame Clear Lens. Rugged goggle great for motocross, BMX, ATV, etc. Same great goggle as the Dirty Bird but now in a JUNIOR size. 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.