1. Quality Material – Nontoxic and durable PVC material, easy to clean. The model consists of two vertebrae with movable intervertebral discs, spinal cord, and nerves. Product size: 11.5 × 10.5 × 8.5 cm. 2. Anatomical Structure – This model includes the fourth lumbar vertebra and fifth lumbar vertebra, intervertebral discs, and spinal nerves at a 1.5x magnification. Among them, the intervertebral disc is made of a soft elastic body, making it convenient for users to demonstrate, and the lumbar intervertebral disc is herniated. 3. Educational – The model demonstrates how the intervertebral disc bends or twists during the actual movement of a herniated disc. This model is designed to enhance understanding of human bones and serves as an teaching tool for anatomy and physiology courses. 4. Visually Informative – Vertebral diseases are becoming increasingly common, so it is useful for doctors to use this model to explain the importance of the spine and spinal movements. Ideal for medical students and professionals, doctors, instructors, schools, universities, etc.