Human Herniated Disc Model, Anatomical Human Lumbar Vertebrae Model Lesion Spine Model For Medical Teaching Learning, Kids Learning Education Display Tool MATERIAL: Non-toxic durable PVC. USE: This model is composed of the fourth and fifth lumbar vertebrae and the intervertebral disc spinal nerve with 1.5 times magnification. The intervertebral disc is made of soft elastomer for user demonstration. The lumbar disc (projection) model shows what happens to the human disc when the body is bent and tortuous. This model is widely used in orthopedics, surgery, clinical teaching, occupational disease prevention, ergonomics, physical education, etc. It is good auxiliary teaching and demonstration; a great teaching aid for anatomy and physiology courses and school teaching, learning display tool. Warm Tips: Every Time After Use/Demonstration, Please Kindly Put The Prolapse Model Into A Sealed Plastic Bag (Avoid Fresh Air), And Store It In A Closed Box (Avoid Light Exposure). And This Will Help Ensure A Longer Using Life Of This Prolapse Model. Thank You! Please Kindly Do Not Squeeze It Too Sudden Or Tread This Prolapse Model, The Prolapse Bulb May Burst With Liquid Bursting Out In Such Cases.