The Glow Window Mosaic includes innovative sticky-it-easy mosaic pieces that adhere like magic to most smooth surfaces. Simply follow the design template provided to make a colorful, glow-in-the-dark mosaic picture to hang on your window. By day, enjoy the beautiful colors of the mosaic picture; by night, turn off the lights and watch it glow. It is a great way for children to practice fine motor skills and be creative. There are 3 designs available, Fairy, Sealife and Space.