New Style Neoprene Anti Dust Motorcycle Bicycle Cycling Ski Half Face Mask Filter Style name: Activated carbon outdoor sports half face mask Light weight material: Diving suit lining Replaceable filter: Non-woven Fabric and Activated Charcoal Filter (Total 6 layers) It is Perfect for Wearing to running, skiing, riding a bicycle,motorcycle in the cold winter Adjustable magic paste closure, one size fits most adults(unisex)