The bamboo mask is an eco-friendly, soft, comfortable, reusable and hand washable adult face mask with a flexible nose piece and adjustable ear loops to customize the perfect fit. This 2-ply face mask is made for all-day wear! The outer shell is made from 50% recycled rayon from bamboo and 50% polyester. The inner lining is made from soft 100% cotton.This mask is non-medical grade. One size fits most. Care instructions: wash before first use. Hand wash only. Do not bleach. Hang dry. Do not dry clean. Do not iron.