Reusable masks. CHILDREN'S size, age 5 and up. Made with elastane and spandex. Machine washable. LET US KNOW WHICH SIZE MASK YOU NEED, IF ORDERING CHILDREN'S MASKS (OPTIONS: SMALL, MEDIUM, LARGE). Colors and sizes vary; we will choose one for you in the size you indicate, but let us know if you would prefer a certain color and we will do our best!