Hoberman Rainbow Sphere

  • Hoberman Rainbow Sphere
  • Hoberman Rainbow Sphere
  • Hoberman Rainbow Sphere
$ 39.99
It starts small and expands bigger than you''d ever expect. Made of rainbow-colored plastic links the sphere expands to 30" in diameter and contracts to a compact 9.5". There's a hypnotic fascination in making the sphere expand and contract over and over again but if kids want to do more with their sphere a guide (included) lists some possibilities. A pulley system is included and a pull of the ring will cause the sphere to contract. Release the ring for expansion. Plenty of fun the Hoberman sphere might get kids thinking about mechanical engineering and some folding/unfolding projects of their own.