Create a limitless world of people, animals, architecture, robots, vehicles and more with IO Blocks. Each set comprises 12 unique plastic shapes and features 6 colors; red, blue, green, tan, black and white. Curved elements add to the variety and encourage more fluid designs and organic themes. IO Blocks connect with a secure, yet easily adjustable friction fit and feature a beautiful matte finish to the touch. Sets range from a 59 piece travel set with locking travel case, to a 1,000 piece large group activity set. The IO Blocks scale is derived from a .5" cube, the largest pieces measuring 1.5" W x 1.5 L x .5" D.