Features: 1. This model uses a fifth-segment lumbar vertebra and a fifth lumbar vertebrae, which are composed of a soft elastic body, which is convenient for the user to demonstrate, lumbar disc herniation, and shows the changes of the human intervertebral disc when the human body bends when it is distorted, 2. This model is widely used in orthopedics, surgery, for clinical teaching, occupational disease prevention, ergonomics, physical education, etc. It has good auxiliary teaching and demonstration! 3. Made of high-quality PVC, and it is easy to wash. 4. Lumbar Vertebrae Model only,ther accessories demo in the picture is not included. Specifications: - Material: PVC - Color: As the picture shows - Pattern: Yellow - Type: Lumbar Vertebrae Model - Dimension: Approx. 10 x 10cm/3.94x3.94''