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 colourful 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 .... Fisher Price Giant Rock a Stack. The classic Fisher-Price® stacking toy gets supersized at 15 inches (38 cm) tall! 6 colorful rings for your baby to grasp, shake, stack, and explore. Shake the top ring for fun rattle sounds. Wobbly, bat-at base. For babies ages 12 months and older.. The Fisher-Price® Rock-a-Stack® toy offers classic stacking fun for your baby. Younger babies will love grasping, holding, shaking and exploring the five colorful rings. The littlest ring has a shiny, reflective surface for baby to discover inside—with colorful, swirling beads that make fun rattle sounds!. "/>Fisher-price rock-a-stack bat-at ring-stacking toy for infants