I received the pi my petals cover ups a few days ago and I've given them a go, so to speak. They are simple enough for anyone to use. You clean your nipple area and peel the plastic off the back and attach it to the center of your nipple. Easy, fast and clean. They immediately covered up my erect nipples which is a problem much of the time. I love them. They can be removed, rinsed and wash up to 100 times give or take.