Although Omaïki one-size diapers fit most babies from birth, there are times when the Mini model is a better option. They are perfect for smaller newborns and premature babies. In its Mini line, Omaïki offers an AIÖ model as well as small versions of the diaper cover and the fitted diaper. Mini-Ö Diapers as well as the Mini-Fitted Diaper and the Mini-Cover come with two height adjustments. They fit babies from 5 lb to just over 3 months.