Modelling Clay Thinking Putty - Aura (glow-in-the-dark):This Thinking Putty with a number of unique properties can become a great stress relief or a crazy toy for your home or office. It comes in a two-piece tin box, which contains about 80g of the product. The putty is very viscous and deforms even under its own weight. Its also very stretchy, bounces like a ball and you can even tear or shatter it into pieces. The material is luminescent. All you need to do is charge it in the sun or under a lamp, and then just let it glow in the dark. Colour:BlueProperties:Stretches like a chewing gumBounces like a ballTears like paperShatters like porcelainGlows in the darkSuitable as:Stress-relief toolCrazy toy for your home or officeIdeal giftUnique promotional item