Every woman is unique - one breastshield does not fit all. This is why Medela offers a wide range of breastshields to meet every mother's needs. Problems with your breasts or nipples needn't prevent you from continuing to provide your baby with breastmilk. Breastfeeding is a very special experience for both mother and baby. If you experience challenges, Medela can help you overcome many of those challenges so that your baby will continue to receive the life enhancing benefits of breastmilk for as long as you decide. A correctly fitting breastshield prevents the milk ducts from being compressed, thus enabling an optimal emptying of the breast and maximum milk output when pumping. This helps you maintain your milk production and supports lactation.