Durable plastic material, multi colors, special designed for children to play. Containing 36 balls in red, yellow, blue and green colors. A total of 36 white poles are divided into four length. Develop your baby's imagination to create a truly three-dimensional space. Insert the stick into the ball to assemble kinds of things. Nice and colorful balls improve kids' color sense, 3D creative ability, train both IQ and EQ.