This skeleton is built to last for ever! Every connection between skeleton parts is made at least twice. Every rib is fixed to the vertebrae at two points, hips are fixed together at four points and can be detached, chest comes with rib-brace and a 6-time wiring. There is natural movement in the joints. For easy transportation or individual demonstration you may take off the arms and legs and the dissectible skull. Compared to our competition, our A205 is really made to last a lifetime. With 30-year-warranty.