Give your child a hands-on and engaging way to learn with this toy. It will teach your child to recognize circles, squares and octagons, color recognition and patterns while also honing their fine motor skills, hand-eye coordination and laying the foundation for education in mathematics and STEM (science, technology, engineering and math). The different colors and varying sizes of the shapes give children a more engaging toy. The base has three different pegs to hold the rings, squares and octagons. The squares have a step shape to lock together. This adds a level of play and challenge as your child grows.Details:Rainbow11" x 3.5" x 8.25" overall sizeSet of 3 stackers Develops fine motor skillsSTEM learningNatural woodFor ages 18 months and up