Head armatures for a 18-22 inch adult, or an 9-12 inch baby doll. These armatures are made of nylon for strength and consistency. Eye sockets assure perfect alignment. Hollow to comply with the Transportation Security Agency. They pass through the x-ray station at the airport, thus allowing you to take them on board the aircraft. This are larger heads for posable artdolls, not the tiny fairies. ;) About 2 1/4" tall.