These were a little difficult in the beginning to get a comfortable fit going, but once I got used to them and figured out the right pressure that worked for me, they were orgasmic. When you get the clamps on your nipples just right, a few little tugs of the chain brought straight pleasure. They are not at all painful (if you're using them correctly), and they bring a nice little kink to the bedroom. They work best if you get your nipples a little hard before trying to place them, and they keep your nipples hard and super sensitive all throughout the lovemaking session. My husband loves for me to wear these when we go at it, and he likes to tug on the chain to send shivering sensations down my entire body. These are the best Nipple Clamps for such an amazing price.