Product Name: Anti Pollution Pm2.5 Mask Dust Respirator Washable Reusable Masks Cotton Unisex Mouth Muffle Allergy/Asthma/Travel/ Cycling Shape: Cotton Mask Mask Type: Safe-Type Color: Blue/White Material: 3 Ply Brand New Non-Woven Mask Application: Security Mask Size: 24cm * 15cm OEM: Available Bfe: 95% - 99.9% Transport Package: 1PCS with Two Filters/Bag Product Description Anti Pollution PM2.5 Mask Dust Respirator Washable Reusable Masks Cotton Unisex Mouth Muffle Allergy/Asthma/Travel/ CyclingFeatures1. 100% Brand new and high quality 2. Made by high quality pure cotton material 3. Comes with breath valve to offer comfy mask wear 4.Thicken design will keep you warmer 5.Skin friendly cloth will avoid skin allergy,keep comfortable wear all the time 6.3D tailored basing on ergonomics, more fit to the face contour 7.Built with filter inserted design (Suggest replacing the filter paper for the mask every 2-3 days) 8.High elasticity ear strap with adjustable lock,let you extend or shorten the rope for optimal wear, soft and more comfortable 9. Washable, can be repeatedly used 10.Collapsible, you can put it inside your pocket and bring it anywhere