Create original bouncing balls inspired by the planets of the solar system. The KOSMOS kit offers a simple process, quality molds, and a special granulate that hardens into a springy bouncy ball when soaked in water. With the included translation and a digital Czech manual via QR code, the activity is easy and fun.
Why choose this kit:
Tip: Combine colors for unique patterns, let the balls cure thoroughly, and enjoy their high bounce.