I was skeptical about spending the money, but the smooth interior is so gentle on cracked skin that I actually look forward to putting them on between feeds. They stay put through the night without any pinching, and I've noticed my nipples feel noticeably calmer by morning.
Mia★★★★☆
These kept my nipples from sticking to my bra between feeds, which was the worst part of the first few weeks. They're small enough to wear under a nursing tank without showing, though they do slide around a bit if I'm not careful.
Daniel M.★★★★☆
These kept my nipples from rubbing against my bra during those early cluster feeds, which was a lifesaver. Only wish the edges were a touch softer since they leave slight marks after a few hours. Still, they've earned a permanent spot in my nursing bag.