yueton Pack of 3 New Fashion Unisex Health Cycling Anti-dust Cotton Mouth Face Masks Respirators Material:Cotton+Activated Carbon Perfect for daily wear to protect you from dust, ash and so on. A good choice for outsports such as cycling, camping, hiking. One size fits for most people Flat Size:approx. 17 x 13.5cm/6.69"*5.31"(not include the straps)