Description: Our dust mask is suitable for all kinds of outdoor activities where dust may be present. Such as: Mountain-biking, Running, Horse riding, Snowboarding, Moto-X, Skiing, Speed walking, Climbing, Cycling, Walking, Motorcycling , etc. Also applies to: Exhaust, Viral influenza, Industrial emissions, Dust allergies etc. Features: 1. 100% Brand new and high quality. 2. Made by high quality air layer elastic cloth, breathable and comfortable. 3.Three-layer fabric structure keeps warmth 4. Washable, can be repeatedly used. 5. Collapsible, you can put it inside your pocket and bring it anywhere. 6. Elastic ear strap design, wear easily, stronger and more comfortable. 7.Free Size(L*W): 28*13cm/11*5inch, one size fits all. Package Included: 1Pcs/3pcs*Anti Pollution Mask