As others have mentioned, the only problem with these is that sometimes you can see the edges of the nipple cover through your shirt. I have found a solution to this that has made them pretty much invisible and that is to not wear them centered over the nipple but instead have only the edge of the cover against the inside edge of my areola (sp?) that is closest to my cleavage and the rest closer to my armpit. It's hard to describe, but I hope this helps!