I got a set of these and couldn't wait to get them on. They work very good and really do a good job on the nipples.

gf says suction hurts if she squeezes them all the way, try smaller pumps of the bulb to adjust suction. These can suck uncomfortably hard it seems but have a good degree of adjustability.

These are bigger than we thought from the photo - they could fit over your thumb. They are very sexy and create a nice constant suction that is not too much or too little.