Approximately 11" in size. Folds up into a pet or opens to lay flat. All the DreamLites come with 4 light options. Steady Blue, amber, or green, and the 4th is all three colors that transition every 4 seconds continually in a loop. The face of the particular pet is also projected along with the stars. One can switch the light into timer mode which will cause the light to shut off automatically after 20 minutes.