Features: Ultraviolet Glows Sparkles Soft Texture About Crazy Aaron's Thinking Putty: Crazy Aaron's Thinking Putty is a safe silicone putty Made in USA by over 500 persons with special needs. Never dries out, never sticky, this putty naturally flows by gravity. Snap it, bounce it, stretch it, knead it, the perfect stress reliever. Smooth texture appeals to individuals with sensory aversions. Easily lends itself to hand agility and strengthening exercises. A great collectible for multiple ages, each type of putty has unique characteristics.