1. Safe material: Our memory chess is made of wooden material and non-toxic water-based paint, so you can use it with confidence and it is not easy to hurt the hands of boys and girls. (Product size: 1 7.5 × 1 7.5 × 5.5 cm or 6.88x 6.88x 2.16 inches) 2. Improve memory and imagination: By throwing the dice to find the color of the national flag, these wooden puzzle games and training toys can improve the brain development of boys and girls. Helps cognitive development, hand-eye coordination and problem-solving skills. 3. Suitable as a gift or family game: This puzzle board game can be widely used at home, school or travel. It is a great gift to bring happy hours to the family of boys and girls. 5. Deputy hand training: Suitable for children over 3 years old, help cultivate boys and girls' awareness of colors, logical ability and curiosity. In addition, the elderly and boys and girls can use it to exercise memory. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.