Each side of this drum-shaped roller has colorful cutouts that match the included plastic shapes, making this toy ideal for color and shape matching. The six shapes each have a unique rattle sound and store conveniently inside the roller. They make a pleasant rattling sound as the sorter is rolled along the floor by toddlers, simultaneously developing strength and agility. This brightly-colored Rolling Shape Sorter will entertain youngsters while encouraging them to differentiate sound and pitch, colors and shapes, practice gripping and release, learn sorting skills, and touch and feel. For babies age 12 months and up.