A must have! The glow brick is a glow-in-the-dark light bulb trapped inside a solid acrylic brick. The Glow Brick recharges from energy in natural sunlight during the day and glows at night. Great for a night light or just a funky object around the house and a talking point at any BBQ.

Size is 3.3" x 3.3" x 5"

*The technical term for the glow-in-the-dark is "photoluminescence" this is a process in which energy absorbed by a substance is released relatively slowly in the form of light.