The Hoberman Sphere - Glow in the Dark is the essence of transformation, expanding from 10" diameter to 32" with one easy motion. It is a great stress reliever that's a blend of mathematics, mechanics and structural engineering. The original transforming sphere from Hoberman comes with a pulley, hardware and instructions to hang as a cool, kinetic mobile. It's bound to fascinate you and the crowd of co-workers that gather around to see it in action!

This Original Hoberman is 10" diameter collapsed and 32" diameter expanded, made of plastic, and is the Glow in the Dark version.