Perfect for busy young builders, 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, which come in 12 unique plastic shapes featuring six colours; red, blue, green, beige, black, and white. 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 STEM skill development.