Each edge is connected by elastic bands to allow little hands to bend it and twist it this way and that. Meanwhile, the rubbery textured beads spin and slide for an extra boost of sensory fascination. Little ones just can't stop exploring! Grab their attention and keep them learning with Quubi. Quubi Unique tactile discovery cube Encourages sensory learning, tactile development Cube edges connected by elastic bands for fascinating flexibility Rubbery textured beads slide and spin Includes one Quubi BPA-Free - Fully safety tested Measures 4 x 4 x 4 inches High-quality materials and construction - Lasting durability Ages 3 months+