Crazy Aaron's Rainbow Reveal Thinking Putty offers a captivating sensory experience with its unique color-shifting properties This special putty transitions through three distinct colors with the warmth of your hands and sunlight exposure, providing a dynamic visual experience. When the lights go out, the putty reveals a glowing hue, adding an enchanting element to your playtime. Made from non-toxic silicone, the putty is safe for all users and won't dry out, ensuring long-lasting enjoyment. Best for ages 3+