Excellent material quality assurance: This model model is made of high-quality polyvinyl chloride (PVC), which has very good corrosion resistance and corrosiveness and is not easy to lose. The surface of the model is delicate and smooth, providing excellent material guarantee for medical-teaching and student learning. Neat life-size design: This human body connector model is built in life-size, and the base design focuses more on display and operation. The voice displays the main structures inside the connector, making it perfect for medical-education or advanced anatomy research. Drama Icons and Markers: Maximizing Teaching and Learning Assistance. It can be used as a teacher's demonstration or a student's self-study, and you can quickly understand the detailed information of the throat structure. Right-sized design: perfect for use in the classroom, lab, or internship. The model is of moderate size, easy to store and carry, while ensuring convenience of viewing and operation. Colour:As Shown Material:pvc Package Contents: 1 * Human Throat Model Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.