Material: This Reusable Half Face Protection Cover Adopts High Quality Polyester, Skin-friendly, Breathable And Comfortable To Wear, Provides Your A Better Wearing Experience. Protect Your Health: Each Filter Is Crafted With 5 Layers, Contains Activated Carbon, Anti-sticking Cloth, Two Layers Of High Efficiency Filter Cloth. Multiple Carbon Filters Will Come With Every Cotton Dustproof Mouth Cover. Protecting From Dust, Pollution, Vehicle Exhaust, Sandy Air, Passive Smoking, Etc. Adjustability: Humans Are Not All Built The Same, Our Handcrafted Face Protection Cover Comes With Adjustable Ear Straps And M-shaped Nose Clip To Fit Better A Variety Of Faces. Our Unique Nose Clamp Helps Our Air Filter Mouth Protection Guard Fit Better And Increase The Sealing Effect. Give You The Most Comfortable Experience And The Most Secure Guarantee. Easy And Not Need Much Time, Just Insert The Filter To It. Cares For Your Skin Keep Fresh Recommended Replacement Of 1 ~ 2 Times A Week.