Features: 1. Thickened and reusable: Made of PP material, smooth and burr-free, smooth to the touch, easy to install, and easy for children to use. Environmentally friendly materials can be used with confidence 2. Stimulate thinking: the process of playing can make children active in thinking and interact with hands and eyes; the process of throwing the ball can control the arm muscles, which is beneficial to children's physical and mental health 3. Parent-child companionship: Fun board games with high-quality parent-child companionship, not only children can play but also adults can play together 4. Appropriate size: the diameter of the ball is about 1.7cm/0.67in, has high elasticity and durability, is suitable for baby's small hands, easy to hold 5. Applicable occasions: When you are in a restaurant, station or on a long-distance train, this toy can quickly calm your noisy children, let them put into thinking, and enjoy hours of fun Specifications: Material: PP Number of players: 2 or more Size: about 23.2*19.2*31.5cm/9.13*7.56*12.40in Packing List: Four In A Row Rotating Game*1 Yellow Chess * 19 Red chess * 19 Yellow weighted chess * 1 Red weighted chess * 1