HOBERMAN SPHERE

Is it a ball? A star? A crazy experiment? The award-winning Hoberman Sphere is a little of everything. Created by Chuck Hoberman, it expands and contracts with a magical motion using a combination of geometry, engineering, and art. Throw it. Bounce it. Kick it. It's irresistibly interesting. Made of linked plastic studs. Magically expands from 9.5" to 30". Includes activity sheet.