I haven't used these for nursing yet, but they've been very comfortable to wear toward the end of my pregnancy (I am due in 2 weeks).  Comfortable material, has held up well to multiple washings so far.  There is no padding so I mostly wear them around the house.  The size medium fits well (I was 34B pre pregnancy, not sure what I am now).  Good price for a pack of 3 when compared to other stores.