Anatomically correct: high quality anatomical representation of human anatomy. widely used: school teaching, learning, researching display tool and lab ornament supplies. great for schools, hospitals, visual aids in physical teaching.material: made of new pvc material, no peculiar smell, which is resistant, lightweight, and has high strength.professional: this model is longitudinally sectioned, and the size is enlarged by 2 times, showing the shape of the stomach when it is moderately inflated.you can clearly see all the main anatomical structures of the human stomach.perfect anatomy: the model shows the mucosal wall, pyloric valve, pyloric sphincter, gastric mucosa, and the mucosa that migrates from the esophagus to the stomach.