Mothers who choose to breastfeed the baby are likely to have sore, cracked and scabbed nipples and the problem of milk leaking. In order to make breastfeeding more comfortable, help nipples heal and prevent the problem from recurring, we design these breast shells for you.Breastmilk Collector - will collect up to 2 oz in each cup at a time.Simple to use - just slide into bra, fitting nipple through the silcone opening.Comfortable to wear - flexible silicone will mold to your breast preventing leakage.Provides relief to sore nipples - no more chafing of nipples from clothing or nursing pads and allows air to reach cracked nipples.Keep nipples dry - allows nipples to dry rather than having damp nursing pads resting against them.Easy to transfer milk - simple to pour collected breastmilk through the airvent into a milk storage container.Safe for mother and baby - made with food grade silicone and BPA free polypropylene.Reusable - breast shells come apart for quick and easy washing.How to use: 1.Put the breast shell inside your bra;2. Place the air vents upward; 3.Every 2 hours, lean forward a bit to take off the shells with upward air vents.4.Pour the collected milk via the air vent into a bottle in cold storage. We want you to be satisfied with our Breast Shells. If you have any product issues, please feel free to contact us, we will reply you within 24 hours