If natural is your thing, then this rainbow stacker is just for you! A great must-have if open-ended play is something you believe in. Definitely a great product to help develop fine motor skills, balancing skills and stacking skills. There are endless ways to stack these rainbows, learning simple physics and logic along the way. This set also comes with a wooden ball, which is a great addition if you and your child are very much into creating ball runs.