Breast storage capacity refers to how much breastmilk a mother can hold in her breasts in between feedings. Storage capacity is not determined by breast size, although breast size can certainly limit the amount of milk that can be stored. A mother with a larger milk storage capacity may be able to go longer between feedings, without impacting milk supply and her baby’s growth. A mother with a smaller storage capacity, however, may need to nurse her baby more often to satisfy her baby’s appetite and maintain milk supply, since her breasts will become full quicker. In the end, either capacity can allow a mother to produce enough breastmilk for her baby.