The Color Boom Collection is a series of puzzles that use color gradient as a main theme, where the colors blend from one to another. Each has a different texture or graphic element to it. Color Boom - Squares is a colorful treatment of colors where they are set onto buildings. While this isn't the same as the other Color Boom puzzles, the colors can be sorted and assembled into an impressive image of colors as a finished puzzle Clementoni puzzles are crafted in Italy using premium quality materials to enhance the carefully selected imagery featured on each puzzle. All Clementoni puzzles are precisely cut to ensure a perfect interlocking fit and a superior finished product. Finished size 19.3" x 14.2".