Plastic. Get a good-quality skeleton at a good price. This replica of a life-sized human skeleton shows all parts in detail. The main joints are articulated; the upper and lower limbs are easily removable. Detachable parts include the skull, cranium, jaw, arms, and legs.
On the left side of the skeleton, the points of origin (red) and the points of insertion (blue) of the muscles are shown. Includes the Human Anatomy Manual.