Proudly made in the USA, Thinking Putty is non-toxic and never dries out. For ages 3+ Crazy Aaron's Hypercolors Heat Sensitive Thinking Putty changes color from your body heat and is a fun way to keep your hands busy! Stretch it, twist it, pop it, bounce it, knead it. .47oz. of putty in resealable metal tin. Manufactured with the help of exceptional individuals challenged with disabilities.