Make your child's bedroom glow like a galaxy with the 4D Glow 3D Solar System. Stick this glow-in-the-dark set to the walls or ceiling of the bedroom for an out-of-this world experience. The 4M Glow 3D Solar System includes one complete solar system. Exposure to light to activates the glow so your solar system recharges again and again. Strong, double-sided tape provides years of use. This item is not recommended for children 3 years of age or younger.