At last…the ring to top them all. This Fisher-Price Rock-a-Stack toy, made from plant-based materials*, offers classic stacking fun for babies. It features a wibbly-wobby rocker base and 5 colorful rings for little hands to grasp and stack. Stacking helps baby develop hand-eye coordination and introduces them to the concept of relative size as they learn to sort and stack from biggest to smallest! (*Toy made from a minimum of 90% ethanol extracted from sugar cane.). – Classic stacking toy with 5 colorful rings and a bat-at rocker base – Made with plant-based materials (*Toy made from a minimum of 90% ethanol extracted from sugar cane.) and comes in FSC certified package – Helps introduce the concept of relative size as baby stacks the rings from biggest to smallest – Grasping and stacking the rings helps develop fine motor skills and problem-solving skills – For babies ages 6 months and older