This product uses fine quality wood, carefully care for every baby, safe and environmental protection.Features:It can help the child exercise the control ability of the small muscles in the brain, and also promote the intellectual development.Parent-child interaction toy, parents can guide their children to speak more from the side to cultivate their children's language organization ability.Cultivate children's memory, observation and intelligence.Fine production, smooth without burr.Non-toxic and harmless, children can use safely.Drawer storage box design, the chess pieces are neat and orderly and.Specifications:Material: WoodApplicable age: over 36 monthsColor: colorfulPackage size: 250 230 40mm / 9.8 9.1 1.6inPackage weight: 680g / 1.5lbPacking List:1 Sudoku Chess