Original Hoberman Sphere-Rainbow

The Hoberman Sphere is the original award winning geometric expanding contracting ball. Made of linked plastic struts each one is a marvel of mechanical engineering. Pull on any of the sphere’s hubs and watch as it expands dramatically from 9.5” to 30”!

• Includes a pulley, hardware and instructions to hang as a kinetic mobile
• Also includes an educational booklet that has 21 activities
• Made of colorful plastic
• Dimensions: 9.5” closed, 30” open
• Ages 4+