fisher price drop through rock a stack jlb81 en gbInspired by the classic Fisher Price Rock a Stack ring stacking toy, this wobbly drop through activity toy introduces your baby to the fun of cause and effect! The Drop Through Rock A Stack comes with 5 colorful rings for little ones to slot through the top or side of the maze and watch as they roll down, around, and out the bottom. For added cause & effect fun, the maze features a wibbly wobbly base, just like the original Rock a Stack toy! Colors