I got thrush and beat-up nipples from a baby that liked to latch on right around the base, and I couldn't stand any seams or synthetic fabrics and was going braless all the time, which was awful because I couldn't wear nursing pads so my shirt was always getting wet and gross.  This bra is so soft and the cotton didn't bother my irritated skin; I bought a second one since I liked it so much.  It gives shape and very gentle support under clothes, but the main thing about it was the breathabiliy and the yield of the cotton over sensitive areas.  The two layers of the bra pull apart and make the neckline somewhat unnatractive if you are wearing a low V, which many nursing tops feature, that's the reason for 4 stars instead of 5.  But that's a minor cosmetic issue compared to the relief of having a bra I could actually wear.  Snaps work great for easy opening and closing of the cups, and the cups roll up out of the baby's way and are not noticeable while nursing.