I should have heeded the advice from all the other reviews that mentioned how small this is. My wife wears a 32 so I got the small. She is quite petite and usually she needs extra small things. I got her the small and she can barely put this on even with the extender.

When she does have this on, it works as expected and keeps the pump cups in place. She wishes the material in the middle had a bit more elastic as well so it did not slide so easily.