Happy Cube is the first born of the Happy Cube family and has a moderate degree of difficulty. Each model has its own shape and color and can be combined into several puzzles. The 6 pack includes all 6 of the moderate difficutly puzzles each which is named after a city. EnjoyHappy Cube is a line of high quality foam puzzles produced in Belgium. Each puzzle has 6 pieces and can be combined into a cube. Each line of the Happy Cube family comes with 6 different cubes of increasing difficulty. Once you combine the pieces to a cube try to put them back into the foam holder for a 2D puzzle experience. Have you solved all 6 puzzles. Well then get ready for the ultimate puzzle challenge You can combine any number of cubes from the same line to make larger 3 dimensional shapes. How many can you make.The Happy Cube level was the first created and has moderate degree of difficulty. Each cube is named after a city has a different color and several solutions.. Pack 6.. Dimension - 5 L x 1 W x 8 H in.. Item Weight - 0.8 lbs.