Best diapers for your Newborn baby’s delicate skin. NEW from Japan! MamyPoko Air Fit Tape Diaper with Curve Fit diaper softly fits a baby's bottom following the contour of your baby’s bottom while reducing up to 50% pressure around baby's tummy so your precious one can stay comfortable and joyful. MamyPoko Air Fit is the No. 1 Mother’s choice of diaper in Japan.