Awesome stretchable, glow-in-the-dark putty that never dries out!
Includes UV laser light to draw fantastic glowing designs on your putty — plus a handy storage tin.
Explore the science of phosphorescence with a 10 page, full-color learning guide
Quality-tested non-toxic formula is 100% safe for kids ages 3 up.
100% satisfaction guarantee. For 129 years, National Geographic has been a brand you can trust for scientific and educational excellence.