HIGH QUALITY - Human heart models are made of environmentally friendly PVC material. This heart model will withstand years of constant use. COLORFUL PLASTIC - The bright colors of this heart model help you tell the different structures apart. It helps to identify the functions of each part and the direction of blood flow. LIFE SIZE - This human heart model is actually the proper size to represent a real adult heart. It shows 34 internal structures of the human heart though an innovative 2-piece design. PERFECT FOR TEACHING EDUCATION - This lifelike model is perfect for biology and anatomy classes along with patient education. Parts are numbered for easy identification. It comes with a simple guide for reference. ANATOMY DECOR - Use to decorate your doctors or cardiologists office. Features: Weight: 8.1 oz. Size: 4.3 *4.3 * 4.7 inch. Includes a labeled diagram. Life size model that comes with a mounting base. Comes apart into 2 pieces to get a better view of the heart. Includes a detailed list of 34 parts corresponding to numbers on the heart. Strong magnets closures so the heart can be easily reassembled and stays assembled.