And it is also can develop kids' hand - eye coordination by playing the color matching game. Great for playing games with your kids and enhancing their cognitive and constructive abilities. Manufacturered by RisoAmarolj. Made of high quality wood and with fine workmanship smooth surface no burrs not easy to hurt your hands. Bright color and has the base color and gradient color making kids know more cognition of color with the increase of their age. A perfect gift for your children.