Y&Y Star 2 Pcs Unisex Adult Three Ply Activated Carbon Cotton Warm Fashion Health Cycling Anti-dust Cotton Mouth Face Masks Respirators 2-packs Lee Minho city hunter Safety Respirator Particle Respirator Home and Surgical Face Mouth Masks Filter Dustproof Antivirus Antibacterial Fog Haze Protective Guaze Masks for Women Men Material:Cotton+Activated Carbon Washable Perfect for daily wear to protect you from dust, ash and so on. A good choice for outsports such as cycling, camping, hiking. Designed to eliminate fogging,bacteria filtration. One size fits for most people Flat Size:approx. 17 x 13.5cm/6.69"*5.31"(not include the straps)