Wooden Wonders Rainbow Rings Penguin Stacking Tower by Imagination Generation The classic stacking tower with an antarctic twist! Five easy-to-grasp rings and a penguin on top. All natural cuts of wood sanded smooth and brightly colored with safe paints. Sorting and stacking develops hand-eye coordination, fine motor skills, and problem solving. Rounded balancing bottom adds extra difficulty and fun. Stands 7. 25 inches tall. Ages 18m+.