Crazy Aaron's Epic Amethyst Thinking Putty is an exceptionally bright and inspiring putty known to help with anxiety and emotional regulation. This Heat Sensitive Hypercolor thinking putty will change color with temperature differences. Watch it change from a deep purple when it's cool to a bright pink as you work with it and it warms up! It will bounce, pop, sculpt, snap, and stretch. It's fun to squeeze, which makes finger and hand strengthening a little more fun. Totally moldable and malleable, this putty won't dry out in the tin. It's scientifically proven to provide stress relief, reduce anxiety, and assist in emotion regulation.