Non-woven, activated carbon filter layer. With unique ventilation design, excellent permeability for breathing. Double air breathing valve, air resistance is smaller, smooth breathing. Suitable for motorcycles, bicycles, racing, skiing.<br><br>- Color: Black <br>- Material: Neoprene<br>- Size: 30x13x0.5cm<br>- Made of high quality material for lasting use.<br>- Dust-proof, flexible and comfortable, adjustable nose clip.<br><br><b>Package Including</b>1 x Dustproof+Extra 4 filters