HxGL-Knock on the piano Children's Educational Building Blocks Toy Multi-Function Wooden Octave Knocking Size L

2: Colored balls to exercise your child's grip; 3: Add a cushion under the keys to stabilize the sound and give the child a good experience; Manufactured by HXGL-Knock on the piano. 4: The product is made of wood and suitable for children over 2 years old; 5: During the process of tapping the muscles of the hands are driven to develop agility. 1:Each color represents a different tone recognizing different tones in the process of knocking different colors;