Description This item is a human lung breathing model, for kids or students to learn the principle of human lung breathing. This set of model can keep kids entertaining and studying for hours. DIY gift and toy for kids, friends, family, etc.Suitable for children over 3 years old. Features - Color: as shown. - Material: plastic. - Size:16.00X6.00X6.00cm/6.29X2.36X2.36in. - Made of premium material, this set of model is durable to use. - Assemble the lung breathing model by yourself, train kid's manual assembly ability. - Parent can play this game with your children, promote child-parent relationship. - This is a perfect teaching tool which will let the student learn the principle of human lung breathing. - Increase knowledge and develop students brains.Packing list2 x sets of lung breathing model