The Rubbabu Rubbablox Building Blocks is a 6-piece beginner block set made of sustainable, eco-friendly, natural rubber foam materials. Babies can grasp, push, and move these blocks to build simple structures. The connector blocks fit snugly into depressions in the blocks. Simply push the connectors in to create different shapes. This set builds creative thinking skills while providing hours of endless fun. Includes 6 large cube blocks and 7 spherical connector blocks in bright colors with tactile surfaces. For ages 12 months and older.