Why Should Children Play Puzzles Toy? Children begin to build self-awareness from 3 years old, children would develop good character and habits through playing puzzles, laying a base for learning and life. What Does Our Rainbow Stacking Stacker Bring to Children? --- Kids stack rainbow blocks into different shapes. Exercise children's color recognition, spatial reasoning, improve creativity, imagination. --- Make up of 7 nesting and stacking rainbow blocks of different colors and sizes. It's a great learning toy for children to feel cognitive colors. --- Produced of high-quality solid wood,smoothness and round without burr, the stacker is coated with water-based non-toxic paint, which is very safe for children. --- Can start by building a beautiful rainbow, then assemble from few to many pieces, the rainbow blocks become smiling face, chickens, cattle or build bridges, tower, tunnels and other buildings. --- It can not only be used as a kids toy, but also as a beautiful decoration. Our rainbow puzzle block is great holiday gift for kids and brings happiness to their childhood. Please order it to give your kids a big wonderment.