Make your own gooey, stretchy, glowing slime with the National Geographic Glow-in-the-Dark Slime Lab! Simply add water to your slime powder, stir, then you'll be ready to play all day. The included storage container keeps your slime fresh longer, and a detailed learning guide has fascinating insight into different slimes found in nature. And don't forget, this slime is extra special because it glows in the dark! Slime is a fantastic sensory toy for kids, and they'll love making their own batch at home!