Material - Made of environmentally friendly PVC material, beautifully hand-painted, no peculiar smell, which is corrosion resistant, lightweight, and has high strength Function: The model shows a healthy bladder and a pathological bladder model suitable for medical teaching or doctor-patient communication Precision Craftsmanship:The Model use different colors to distinguish different positions. Designed to simulate Bladder, essential for identifying and understanding diseases Lab supplies - PVC material does not have to worry about being broken by students,so It will be a great addition to your lab supplies. Great for school teaching tool, learning display, and collectibles Wide range of applications - School teaching, learning, researching display tool and lab ornament supplies. Great for Schools, hospitals, visual aids in physical health teaching. Really a great teaching aid for anatomy and physiology courses