Description:Made of wood, eco-friendly strong and sturdy. This puzzle game box began at ancient China which called Kong Ming lock.The wooden game can develop Children's logical thinking help to practice concentration.Players only open them in the correct way, it can make you have a pleasure leisure time.Perfect for adult, boys, girls, kids as Christmas or birthday gift.Large storage space, exquisite carvings and patterns.Size Chart:Size: approx. 15x11.5x4.2cm / 5.91x4.53x1.65 inchPackage Includes:1 Piece Puzzle Game BoxNote:Please allow 1-3mm measuring deviation due to manual measurement.Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures.Thank you!