Smart putty in a practical metal tin:- Shimmers depending on the light- Not sticky- Does not stain hands- Odorless- Does not dry out- BPA-freeIntelligent putty WizzardVivid red with fine golden glitter particles. When exposed to sunlight or other UV light, the putty turns a dark purple color. As soon as the putty is charged with UV light, it glows blue in the dark.it also has all the basic properties:- It stretches like chewing gum- It bounces like a ball- It melts like pulp- It can be torn like paper- In a practical metal tin- Non-sticky- Does not stain hands- Odourless- Does not dry out- BPA-free