Shake Twirl Bounce Calm. This ball has it all--play, mindfulness, fidget, and scientific curiosity!
Rheoscopic--what? Rheoscopic fluid is a special material that shows currents. Within this planet's shell you will see kinematic viscosity in action! Visualized currents in the sphere are beautiful and ever changing. SWORLD's shell is strong and resilient like you! So you can bounce it.