The rich colors and patterns of the We-Blocks will evoke a child`s curiosity and desire to explore as well as fulfill their imagination. There are three sets in this series - the Tactile Cube the Reflector Cube and the Construction Tower. The Construction Tower set consists of 4 green blocks with a solid square design 2 yellow blocks with an open square window design 2 blue blocks with an open rectangular design and 2 pink triangular blocks. Blocks fit together like puzzle pieces. The Construction Tower set adds windows and triangle pieces for another level of play. It is suitable for ages 3 years and up.- SKU: WEEB247