Specifications: Tangram toys with smooth surface, bright colors, compact size, easy to grasp, very interesting; water-based paint, no burrs, very safe. Using this tangram toy can let children try to build what is shown on the cards or create their own designs, it is great for developing spatial awareness, hand-eye coordination, and problem-solving ability. It is constructed of wooden material. The length of this tangram puzzle is 12.5cm and the width is 12.5cm. It is suitable for early education for children.