I had 2 bad experiences with these. One time I was at the beach and one fell straight of of my bathing suit while I was playing a game. Another time I was at a kick back with some friends, came home, realize one is missing, next day everyone is talking about the chicken cutlet they found in the bathroom floor. I didn't even feel it come out?! I used it instead of the thin fabric pads in my bathing suit because they got crumpled up in the drier and I didn't want my nips sticking straight out of my bathing suit so I had to put some pads in! Long story short be careful wearing these during physcial activities!!! I honestly wont buy another pair because of what's happened to me. They definitely work well but I'm not going to risk embarrassing myself again with these things.