All rainbow beads are made of premium plastic material, safe and durable. Supports multi-player competition, providing endless playfulness, improve children's cognition and concentration. Logical training toys: Imagine and judge the result of pushing the ball in your mind, and compare multiple inferences to get more balls of the same color. Perfect game for parent and kid to play together, enhance parent-child relationship and emotion. This rainbow chess toy will be a great gift for kids 6-12 years old. Size Chart: 48 beads: approx. 20.5x20.5x4cm/8.07x8.07x1.57inch 80 beads: approx. 25x25x4cm/9.84x9.84x1.57inch Package Includes: 1 Piece Rainbow Beads Chess Toy Note: Colors might be different due to different monitor display. Manual measurement may cause slightly difference in size.