Grimm's Circle-in-Square Wooden Mini Magnetic Creative Play Design Puzzle in Travel Box Unique magnetic puzzle for creative design is made of 64 wooden pieces backed with magnet strips A relaxing, therapeutic activity that encourages kids (or adults!) to explore and discover their own creativity Packaged in an attractive black magnetic 8-inch square storage box that doubles as a play surface Create designs inside either side of the included metal storage box, or placed on a large magnetic surface (consider Grimm's Folding Magnetic board or large black magnetic board) A terrific take-along activity for children ages 4 years & up. Look for other Creative Design Magnetic Puzzle Sets from Grimm's!