The Blues are the first addition to the award-winning Dado Cubes line. Dado Cubes combine art and science as players explore architectural principles — proportion, balance, structure and color. A new twist on classic building blocks, Dado Cubes engage the imagination as the slits on each cube are interlocked to create an unlimited number of three-dimensional structures. Each set features 10 cubes, scaled from 1” to 5”, capable of building structures over 32” high. They are made of durable, heavy-gauge plastic and were developed, manufactured and assembled in the U.S.A. Dado Cubes have been honored with numerous awards, including Dr. Toy's Spring 2007 Best Product Award and a Spring 2007 National Parenting Center Seal of Approval. Launch date: May 2007.