Worn on the ear Adjustable.5 layer activated carbon filer,filter flexible replacementM-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 etcWEAR 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 faceB. 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.