Great teacher aid for classroom a fun way to teach anatomy help kids know what's inside human body. Material:polyester and cotton. Teach your child to understand? Where will your food be digested? Manufacturered by YA-TUBE. montessori early development toysspecial education teaching aids for kindergarten preschool and home school For ages 3 years and up. Material: polyester and cotton. Size: 18" W x 24" L. The size is just right it can be worn by both adults and children