The Hoberman Sphere is a geometric contracting ball linked by plastic struts made with a marvel of mechanical engineering. The Original Hoberman Sphere Rings has linking rings of color that magically expand from 9.5" to 30". You can hang it from the ceiling and using the pulley, create an expanding mobile that you can open and close.Details:Multicolor10.1" x 10.1" x 9.6" package sizeContents include: 1 expanding sphere, pulley and instructionsFor 1 playerMade in ChinaBrand new condition in original packagingWipe clean with dry or damp clothFor ages 4 and up