This days of the week mask set features 7 masks that have the days of the week on the inside of the mask. Each mask features an adjustable metal molding around the nose for a better more secure fit, a sleeve for a replacement filter and adjustable ear toggles. These face coverings are 100% cotton and can be machine washed. Each set also includes a washable mesh bag to help wash your masks. Our kids masks are designed for kids between the ages of approximately 4-12.