DIY 3D model:Can exercise children's hands-on ability. Complete structure:A set include heartlarge intestinesmall intestinelungstomachkidneyliveresophagus trachea and bladder.Help children understand the shape and location of internal organs. Manufacturered by Per. Size:about 18" W x 24" L. Perfect tool to help children understand the human body structurevery suit for kindergartenscience museumlearning activity and parent-child game. Lovely viscera organ:design for childrenlet them not be afraid bloody internal organs.