These 4" long, brightly colored cars with art on both sides feature a clever contour that allows cars to stack in any combination! They also have easy to roll wheels, making them simple for babies and toddlers to spin. Promote grasping, stacking and rolling while developing gross motor skills and hand-eye coordination! This pack has three wooden stacking cars and animal drivers for each; a bear, a dog and a cat. Ages 9 months and up.