GUOER Bouffant Scrub Hat and Respirator (Black) Imported Unisex,One size fits most Respirator:Pm2.5 Filter Flexible replacement,M-shaped nose clip for a comfortable fit,Allows for easy breathability Ideal for Dust, Germs, Allergies, ,Smoke,Pollution,Ash, Pollen,Gardening,Crafts Bouffant cap:Elastic cords and cord lock for easy adjustment Bouffant cap:Built-in sweatband across the front end