GUOER Mask Can Be Washed Reusable Masks Protective Mask One Size Multiple Colors Worn on the ear Adjustable.5 layer activated carbon filer,filter flexible replacement M-shaped nose clip for a comfortable fit,Allows for easy breathability.Unisex,One size fits most,White or black mask elastic belt, random delivery.Dust,Smoke,Pollution,Pollen,Gardening,Crafts etc.the projects meet the requirements of GB/T32610-2016 Technical specification of daily protective mask standard. WEAR INSTRUCTIONS.A. Unfold the mask and place it on the face.Unfold the mask and put the filter into the inside layer after that fasten. place it on the face B. Adjust the straps on both sides of the mask.Apply the two straps on both sides of the mask to your ears and adjust the seal rings attached to ensure comfortable wearing experience. C. Adjust the nasal splint position.Gently press the nasal splint, slowly exerting pressure inward and push from the center to both sides till it is tightly and comfortably fixed to the nasal bridge. You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!