Ages 6+ This very cool rheoscopic toy is a swirling planet resembling Mercury in your hands. Rheoscopic fluid is a special material that shows currents. Within this planet's crust you will see fluid mechanics in action at rest and in motion. Sworld's shell is strong and resilient so you can bounce it. Give it a shake and watch as countless microscopic shimmering particles flow. After the turbulence the Sworld will calm and the particles will settle. Skills Fine motor skills Gross motor skills Independent or group play Contents Sworld Mercury Pearl ball
