Features:1.High-Quality Materials: The product is made of high-quality wood the logs are lacquered comfortable to the touch and no peculiar smell.2.Develop Intelligence: Help improve intellectual development math puzzles various permutations and combinations so that the sum of the numbers in each column is equal to 38.3.Safety And Environmental Protection: All the materials are fully certified and environmentally friendly. Be sure our premium quality wooden Intelligence Development puzzle with honeycomb shaped pieces is absolutely safe for your family4.Unique Traits: You are still looking for a brain-teaser? Want to train your child?s thinking and problem-solving skills? Better to do it while playing with our unique shapes puzzles It's useful for adults too. Wooden puzzle toy is good for adults Intelligence development and trains memory.5.Wide Application: This product is suitable for all kinds of people both adults and children and children can use it which helps to improve children's brain intelligence development. Specifications:Package:BlisterProduct Size:12*7cmMaterial:WoodWeight:about 150gNotes:1.Due to the effects of light and shooting angle the actual color of the item may differ slightly from the color shown on the picture.2.Due to manual measurement please allow 1-3cm measuring deviation.Thank you for understanding includes: 1 * Wooden Number Puzzle Toy"