Pros: washes well
Cons: didn't fit comfortably for mom or baby
As a mom who has used nipple shields to help my preemies latch, I was disappointed in the new shape of Medela's nipple shield. I first used the old design with my son who was tongue tied, and it worked really well. I used them again for our 27 week preemie daughter with great success. The LC in the NICU showed me this new design and recommended the old design but gave me both to try. The old design worked well, but this design didn't. It rubbed me raw on the notched side. I tried flipping it around, which helped some, but it wasn't comfortable. I guess if I had to use these I would, but overall I am glad I saved my old round ones. Our newest son tried them once, screamed and was frustrated by them.