Material 100% polyester fiber (polyester), M-shaped nose clip, breathing valve Accessories structure Four options: no filter//1 mask with 2 filters,/1 mask with 6 filters,/1 mask with 10 filters Applicable scenarios Suitable for cycling, camping, running, traveling, climbing and daily use. (Non-medical m-a-s-k) Product performance Very soft, breathable, water-repellent, washable, the buckle can be adjusted tightly, and the length can be changed at will according to your facial contours to prevent leaving marks on the face after taking it off. Protect your mouth and face from dust, cold, dust, pollen, allergies, fog and haze, exhaust emissions, passive smoking, etc. Size:One Size | Color:With 2 Filter