This is an excellent half-size model for demonstrating the basic anatomical features of the human skeleton. The carpals and tarsals are fused, but the rest of the skeleton has natural movement in the joints. The heavy-duty metal base adds an extra measure of stability while the skeleton itself is constructed of rugged plastic (PVC). Features include unbreakable ribs, stainless steel screws, brackets and springs to resist corrosion. Detailed key included. Height: 85cm (33.5 in.) Shipping weight: 6 Lbs., Dimensions: 20" x 10" x 7".