Our Division of Planet Reducing employed the Shrink-o-Meter on a local planet to create this wonderful rheoscopic toy. Rheoscopic, what? 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 twirl and watch a bazillion microscopic shimmering particles flow. After the turbulence, the SWORLD will calm. Play, mindfulness, fidget, and scientific curiosity all in one ball!