This key box is perfect for developing childrens dexterity while having fun. To open the doors and retrieve the pieces inside, children must choose the correct key to match the lock. A clever feature is the transparent back part of the box, which allows children to see the pieces falling and shows the number and type of blocks placed. Key Features: Interactive Play: Children develop hand-eye coordination and understand cause-effect relationships by matching the right key to the lock. Transparent Back: The transparent back of the box lets children see the pieces as they fall, helping them learn about shapes and numbers. Magnetic Key Ring: The convenient magnetic key ring fits around the wrist to prevent key loss. Includes 6 Blocks and 3 Keys: Comes with 6 blocks (1 yellow triangle, 2 blue round pieces, 3 red squares) and 3 plastic keys. High-Quality Materials: The pieces are made of wood and painted using water-based paints.