Personal Protection Against | Dusts | Allergens | Fog Haze | Splattering Liquids | Anti-Odor 5 layers of protection and efficient filtering Two layers of non-woven fabric, two layers of melt-blown fabric. Made of reusable activated carbon made of cotton ensures that your skin stays fresh. Foldable, 3D, and lightweight design. Anti-dust protection mouth mask for sports, running, hiking, climbing, and for many other purposes.