The Medela Supplemental Nursing System (SNS) is a feeding device designed to help mothers provide supplemental fluid to their baby during breastfeeding. It is particularly useful for establishing and maintaining lactation when there are concerns about milk supply or when a baby has latching difficulties. The system consists of a specialized bottle that attaches to a feeding tube, which is then placed at the nipple. As the baby nurses, they receive both breast milk and supplemental fluid simultaneously, encouraging effective sucking and promoting milk transfer.