Tieramid CircleSet offers a multifaceted educational toy system. Its main feature is a unique 22-piece set of circular puzzle blocks. They fit together to make a cylinder that is 4.5" high and 7.5" wide with non-toxic coatings featuring six brilliant colors. It also includes a full-color deck of 48 Tieramid Pattern Cards (Volume 1). Each Pattern Card has an image that represents a possible configuration of the blocks. The cards have three levels of difficulty and are also multilingual.