<p>Mix your own Mac N Cheese Thinking Putty®! Everything you need is included in the tin. Simply mix the color-izer with the clear putty, add your mix-in, then play!</p> <p>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.</p> <p>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.</p>