Leave Earth's atmosphere and blast off to a new galaxy! Use the heat of your hands to transform your Thinking Putty® from deep space blue, to ultraviolet purple and then to cosmic pink. Stretch and pull your way into Intergalatic space and create infinite galaxies. Vibrant colors change as you play-flecks shine and shimmer like the stars. As part of the Hypercolor® Collection this color changing Thinking Putty® is heat sensitive, meaning it starts one color and changes to another through heat transfer. The more you play the more the color will change! Thinking Putty® helps build hand and finger strength through a fabulous tactile play experience with unique, unexpected properties and provides relaxing, yet stimulating interaction for anyone with sensory integration issues. Thinking Putty®  is non-toxic, won't dry out, and won't leave a sticky or slippery residue on your fingers, so it's great for stretching, molding, bouncing, tearing, popping and playing by kids and adults alike.