I am a 38D bra and got the 4 inch covers. They are super sticky and easy to apply. Very comfortable to wear. They do not pull on your skin when you take them off and readjust them and put them back on. I’ve only worn them once. It was a day of low humidity so I wasn’t sweaty.\nI cannot speak to their overall longevity because I haven’t truly worn them for several days in a row or under several conditions such as activity level intensity or humidity in the air.\nI will say that they fit fine and are very comfortable to wear. You cannot tell from the exterior of your clothing that you are wearing any covers. If you have a large nipples, they do give you breast petals. What I really like is the plastic case so that you can store them when not in use. It folds up in snaps and fits in my drawer, so that other lint doesn’t get to it.\nRemember, these have absolutely no support at all. They are mainly to cover and conceal.