18 months & up. Introduce young builders to organic construction and social emotional expression with the curved shapes of toddler STEM toy Grippies® Curves. Inspired by shapes found in nature, the colorful curved rods with secure magnetic ends encourage magnetic and tactile exploration through patterning and 3D construction. With cute faces on the over-molded metal ball connectors, toddlers can create expressive characters or expand their builds. The tactile, soft touch pieces make Grippies® Curves easy to hold as young children practice their dramatic narrative and building skills. Compatible with other Grippies® sets.