Breakthrough Puzzles Marvel Heroes -- Level 1 -- 100 pc.3D Breakthrough Puzzles are a unique patent-pending puzzle system that use real 3D innovation to create stunning works of art. 3D Breakthrough Puzzles unite the traditional flat-art jigsaw puzzle with 3D technology. The puzzler first puts together and glues the jigsaw puzzle and then uses specially designed clips to construct the unique cardboard pieces into 3D components, creating images that fits seamlessly into the overall puzzle artwork. It"s a great family activity.Product Dimensions: 12 (L) x 12 (W) x 2.63 (H)Age: 6 to 12 years