-Made of high quality, non-toxic and durable wood. -Stringing beads are in a large size, suitable for preschool children, which is helpful to develop their fine motot skills, dexterity and hand-eye coordination. -By playing with this, it helps to train the child's brian, cultivating the child's self-thinking, increasing the parent-child relationship between the child and the parent, it's also a communication tool for the children, and accompanying the child's childhood growth.