Award Winner! For anyone out there who still doubts that smoking is unsafe, this lung model makes it an open-and-shut case. Cross-sectioned, the life-size model can be opened to reveal that this is a terminal case: Tumors crowd around the bronchus, the lung tissue is riddled with air pockets caused by emphysema, and the bronchial tube is plugged with slimy green phlegm. 5 1/2' x 8 1/2" x 5".