They're comfortable and make nursing and pump8ng really easy.  Don't buy them for the lining though, the foam cup insert is a weird porn star like shape that doesn't follow the outliine of my actual boobs at all.  I also found that they ran slightly small.  Pre pregnancy I was a 36 C, I'm not positive my cup size now and it frankly fluctuates during the day but if say I'm a 38 d or dd and the medium does work.

Fyi for those out there who are curious, like I was, apparently you can't wear underwire while nursing because it can cause plugged ducts and mastitis.  I felt like my boobs would look weird without underwire, but I haven't been self conscious wearing this.  The fabric is a bit thin without the cups/liners so you can see the slight outli ne of nursing pads through it.