Let stars illuminate your room with 4M Glow Stars. Turn your normal ceilings and walls into a magically starry night with these glow in the dark stars. After installing, simply expose to any light source for several minutes, turn out the lights, sit back, and watch them shine. Each pack contains sixteen 1-1/2-inch to 3-1/2-inch stars and adhesive for sticking to flat, dry surfaces in bedrooms or playrooms. Make your own design and constellations wherever the adhesive will stick with these glow stars from 4M. Give your child the gift of science with toys that foster curiosity and encourage learning. Recommended for ages 3 and up.