Well it took me awhile to figure out how to use these because one of my nipples is flat and product tended to slip off. But I found that covering my nipple and surrounding area in lube helped a lot. These nipple suckers are awesome because they cause a building up sensation that only gets stronger the longer they are on. They are easy to use and easy to store I use a Ziploc bag for mine. The suction is okay so once there on don't make any harsh movements or they might come off. Be careful if your sticking them to other parts of your body as you might get hickies (lol).

It's not really that I don't like these it's more that I've misplaced them and can't find them to use, which is pretty frustrating but that's my own fault. Im sure if I still knew where these were I would still be loving them.