Allow the imagination to run wild creating countless shapes with the IO Blocks. The easily adjustable pieces have curved elements, which allow to build designs that are more fluid. The IO Blocks feel nice to the touch due to their smooth matte finish, encouraging longer building play. This set includes 114 pieces, each of which is derived from a .5" cube scale. The largest pieces measure 1.5"W x 1.5"L x .5" making it easy to create all kinds of fun items from robots to vehicles and even buildings. The sets come with 12 unique shapes and six colors; blue, green, red, tan, black and white. IO Blocks sets range from a 59 piece travel size to a large 1,000 piece activity set. Plus now, IO Blocks also come in App form so you can build IO shapes on your smartphone or tablet as well as in Google Play.