A classic toy that's been around for ages. Donut shaped circles that stack one by one on top of each other. Simple, yet fun for small children. It's bright colors and smooth wooden circles are easy for small hands to grab. Babies love stacking these rainbow circles. Shapes mount onto a solid wood rocking base that adds a little bit of challenge to babies attempt to complete the task. Call out names of the colors as your child stacks the donuts to him or her get an early start on color recognition and counting. It makes a wonderful birthday gift, or Christmas gift for babies and toddlers 18 months and up.