If you're a fan of nipple play, but aren't necessarily into pinch, you and your nipples are in luck! CalExotics brilliant Nipple Suckers are a fantastic alternative to clamps. 

Simple, sexy, and super-easy to use, these simple cylindrical Suckers deliver some seriously pleasurable suction. All you'll need to do is squeeze the circular base of each, position the Sucker over your or your partner's nipple, and release. The sensation is a bit more subtle than what you'd feel from a clamp, but if you can always flick and tug your Sucker(s) to kick up the stimulation factor.

In hypoallergenic Pure silicone, the Suckers clean easily using warm soapy water or a good toy care fluid/foam. Avoid contact with silicone lubricants and other silicone toys/products.

* Each Sucker is about 2.25"/5.75cm long and 1"/2.5cm wide