Please feel free to comment if you have any requests, such as adding photos! From the official website: - Features: 1. This is a large intestine model with softness, texture, and insertion feel close to a living body. 2. The difficulty of inserting the endoscope can be changed by changing the length and fixing position of each part of the large intestine. 3. By opening and closing the anus, the lumen changes due to air supply and suction operations, just like the actual large intestine. 4. The intestinal tract can be removed and replaced, and it can also be washed with water. 5. It can improve endoscopic techniques and simulate difficult insertion cases. - Product size (approx.): W48 x D22 x H30cm / W18.9 x D8.7 x H11.9in - Main materials: Soft special resin, hard resin