- Mesmerizing, educational kinetic sculpture and interactive “flow toy”
- Folds flat and pops open, surprising everyone
- Interactive: Rolls along your arms and can be passed from one arm to another
- Diameter ~5″ when flat. All handmade, exact size may vary
- Great gift for science and math lovers!
[Product Page on Amazon.com – $19.95 | Thinkgeek.com – $19.99]