Material description: 100% polyester fiber (polyester), M-Shaped Nose Clip, Dustproof Face Decoration, Very Soft, Breathable, Water-Repellent, Washable, Adjustable Elasticity With Buckle, You Can Change Its Length According To Your Facial Contour To Prevent Leaving Marks On Your Face After Taking Off . Suitable For Adults, Men, Women Size: Width:7.87inch(20 cm), height:5.91inch(15 cm) 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. Applicable scenarios: When You Go Out, You Can'T See Too Much Dirt In The Air. Your Health Is Priceless And Ideal For Cycling, Camping, Running, Hiking, Sports, Buses, Travel, Climbing And Daily Use. Fashionable And Suitable As A Gift. Accessories structure: 1 is equipped with 2 filters Washing instructions: It is recommended to wash by hand, do not bleach.