At the start of breastfeeding, a mother’s nipples can get very sore and sensitive to anything that touches it – whether it be the fabric of her bra or the fabric of her clothes. Breast shells that are worn under the bra are meant to protect sore, wounded, sensitive or cracked nipples with their soft, flexible silicon membrane and shell with ventilation holes. It provides unbelievable comfort - moms let out a sigh of relief after inserting and covering their nipples. Ventilation holes at the back indicate that the product can be used for long periods of time.