'oioiooi' is developed by Korean designer Yoo Hye-rim and language teacher Yu Hye-jin with the aim of enabling toddlers who recognize characters as picture to play with characters before they are taught alphabetic letters at their formal education programs. Every single product from oioiooi has been designed for creative playing because they believe that play may make a better world. Through a simple but considerate design, they would help kids to express their limitless, infinite imagination.

They are made of unprocessed walnut and beech wood and passed the international safety standards.