2008-12-27T18:07:22-08:00 Breast shells are used in the last few weeks of pregnancy to help flat or inverted nipples to stretch out - so it will be easier for the baby to have something to latch on to. The rigid plastic puts a firm pressure on the ligaments around the base of the nipple. Medela and Avent now make a model with a more comfortable material, which offers some give and yet is still effective in applying pressure. The cost difference however, is considerable. Combining the shells with the Hoffman Technique of exercises can be very helpful preparation when needed. Make sure you have a lactation consultant check your nipples a few months before birth to help avoid problems that can be worked on while you are still pregnant! Breast shells can also be used to collect milk if you are a heavy leaker. If you have sore or cracked nipples (hopefully you will take measures to prevent this before it happens), breast shells help to keep anything from touching them. 26 Nursing Aids-Breast Shields & Shells 23 published 2009-07-21T12:53:31-07:00