Shake, rattle and stack with the battat stacking rings! these five uniquely shaped rings also double up as fun rattles, as they contain colourful cascading beads which produce a great sound when stacking and shaking, helping to develop motor skills and hand-eye coordination skills. the oversized central column makes stacking easy for young children and the chunky, textured rings are easy for little hands to hold. features a rounded base which keeps things rocking and rattling!.