EP Line Phlat Ball Jr. Chameleon Purple
Phlat Ball Junior - throw the disc, catch the ball! Hold it in your hand and it will change the colour :)
Heat changing colour!
Try this interesting toy. Press it, it will change to disk. Throw it and it will turn into a ball.
Play modern hot potato - who will end up with the ball in their hands?
You can find more tips for the game on the packaging ;)