Material & Craftsmanship - The 1/2 life sized muscle model of the human body with removable organ is made in non-toxic PVC material, easy to clean. It is detailedly hand painted with fine craftsmanship and installed on a base. A colorful educational brochure is also provided. Digital Mark - Human Muscle and Organ Model we have specially designed digital indicator signs, here are more 200 numerical indicators. Every numbered structures can be accurately identified.The numbered highly-detailed anatomy tool helps you visualize how muscles work and will allow you to explain concepts more thoroughly. It's designed to provide you with a comprehensive system of learning aids.