Building blocks have always been one of the most popular toys among children. Light Stax are beautifully colored blocks that glow. Building from a powered base, every block magically lights up as you stack. There is no "wrong" way of stacking the blocks, which provides endless possibilities to fulfill your imagination and creativity. Light Stax can also be used as a custom night light with 3 light modes: solid, flashing and fading. And all three modes have a 15-minute auto-shutoff. Care Instructions: Clean with a damp cloth.