Material:cotton Function:Washable, reusable, adjustable nose and earhook. Application : This cotton ideal for Travel,Outdoor windproof,Cycling One size fits most:Suitable for most adult boys and girls Package: 1 piece reusable cotton ,2 packs replace(including 4 pieces) and 1 bag adjustable ring(including 2 pieces)?Package includes? 1 piece cotton, 2 packs replacement (including 4 pieces) and 1 bag adjustable ring(including 2 pieces).If you are not satisfied for any reason, please feel free to contact us and we will get back to you within 24 hours. ?Application? Ideal for travel, running, hiking, sports, buses and more. Stylish and suitable for gift giving. ?Freely adjustable? Earring cotton with elasticated cord, you can freely adjust the length of the cover strap as needed. One size fits everyone, Suitable for adult men and women. ?Reusable?This is washable and reusable. ?Rugged and durable? There are made of cotton.Nose adjustment makes people more comfortable.