This product uses premium wood, care for every baby, safe and environmental protection. Features: Perfect for children who know the concept early addition and subtraction and learn simple operation of addition and subtraction. Improve children’s interest in math. Made of wood, safe and practical, help your baby learn math math. Parent-child interaction toy, parents can guide their children to love learning. It can cultivate children’s ability to concentrate. Let your child learn math while while playing games. Features: Material: wood Item size: 300 * 215mm / 11.8 * 8.5in Package size: 310 * 220 * 33mm / 12.2 * 8.7 * 1.3in Package weight: 650g / 1.4lb Packing list: 1 * math toy kit