Size 2-7: Children from 2 to 7 years. Size 8-adul: Children 8 years and over, adults also. This mask is made of 3 layers of 100% cotton fabric. DISCLAIMER : this mask is not a medical device. This product should not be used as a replacement for surgical mask N-95. Face masks are effective only when used in combination with frequent hand washing and social distancing. Returns are not accepted for hygiene purposes. CARE INSTRUCTIONS : Machine wash hot-water after every use. Hang to dry. Do not number dry.