Mudpuppy 100-Piece Outer Space Glow-in-the-Dark Puzzle &ndash; Award-Winning Puzzle with Glowing Pieces Will Amaze Kids Age 5+ 18-by-12-Inch Puzzle  Upon completion, the glow-in-the-dark puzzle measures 18 by 12 inches, meaning it doesnt require a lot of space to complete Award Winning Design  The Mudpuppy outer space puzzle has won the Family Choice Award and the Tillywig Winter Award 100 Pieces  The 100-piece puzzle is the right size to challenge young children without frustrating them Turn Out the Light  Once the puzzle is completed, turn off the rooms lights to see the glowing artwork Fun Storage Box  The enjoyable artwork on the puzzle is repeated on the storage box, which measures 7.5 by 5 by 3.5 inches.