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. All IO Blocks® building toys connect with a secure, yet easily adjustable friction fit and feature a soft-touch plastic with a special matte finish. The high-quality design of the IO Blocks® toy, with its open-ended building possibilities and problem solving, puzzle-like qualities, makes it a great fit for educators and parents interested in STEM skill development. Sets range from a 59 piece travel set with locking travel case, to a 1,000 piece large group activity set.