Face Mask Meri Mask for kids. This mask is made of 100% cotton, for children under 12 years. First of all: Our masks are no medical products and do not offer any protection against transmission of droplet infections. With a purchase you confirm your cognizance that this product is not for medical use. The mask does not have an additional noseband or sewn-in filter. Our mask comes with a cotton strap or elastic band and is washable at 95C. If you have several masks, wash them separately by color at 95C without detergent.