The Difrax Breast Shell incl. 1 outser shell and 3 inner shells (sizes S, M, L) are an integral part of the Difrax Breast Pump. Both the inner and outer shells are easy to clean.
The inner shell (choose the right size to fit your nipple) is placed in the outer shell. Then place the assembled shell on your nipple in your bra. Make sure that the milk tube is not pinched closed by your bra.
BPA free babyproduct