With its user-friendly design and sturdy construction, the lung model is a versatile and reliable tool that can help students of the and its functions. It is a good helper for teachers in class and demonstrations. Features -Color:Red -Material:Plastic Rubber -Size:19.00X11.00X11.00cm/7.47X4.32X4.32in -This model can stimulate students' interest, help to the understanding of lung breathing knowledge, good for learning. -Also a good teaching aid to help teachers explain relevant lung breathing knowledge in class. -Can exercise kids hands-on ability and thinking skills, and cultivate their interest in human body knowledge. -Great present and educational toy for friends and kids, and also perfect for teaching use. -It is an educational teaching aid, and students can learn a lot of useful knowledge from it. Package list: 1 x lung breathing model