Battat Lock & Learn Activity Cubes The Battat Lock & Learn Activity Cubes is an 18-piece set of nesting, stacking, and sorting boxes designed to challenge your child's matching and problem-solving skills. Each brightly colored cube locks with a unique, color-coded key, engaging young minds in fun, hands-on learning from A-B-C to 1-2-3. Product Details Features four nesting cubes that can be stacked high or stored inside one another. Includes 13 different sorting pieces (numbers, letters, and shapes) that fit into the cubes to practice matching skills. Uses a set of color-coded keys with unique shapes to teach problem-solving and key-matching to unlock the cubes. Helps improve fine motor function, dexterity, and hand-eye coordination. Made from worry-free and durable materials that meet or exceed all safety standards. Recommended for kids 2 years and up. What’s Inside Four Nesting Cubes 13 Sorting Pieces (including numbers, letters, and shapes) One Set of Color-Coded Keys