I had very high expectations for these nipple clamps when I first got them. They seemed to be infinitely adjustable had a nice smooth texture and broad clamping area which seemed like it would be fairly comfortable for extended periods of time. Their appearance is very industrial and appealing. The weight was significant enough to let you know they were there and the chain had a very pleasant smooth texture and made a nice purring noise as it moved around. I was encouraged that the clamping mechanism had to be adjusted manually and slowly by screwing the clamp into place, that seemed a lot more personal and less abrupt than an alligator clip, also avoiding the sharp indentations that the alligator clips tend to cause.

The problem, the darn things would not stay on. The smoothness and broad clamping area served to allow them to slip right off if they were not ratcheted down to an excruciating pinch level. Perhaps with a lighter chain in between it would have been a little easier to keep them on without a crushing sensation, but with the clamps at a mild level of discomfort/stimulation, the slightest movement meant I was hearing the chain slinking away and clacking on the headboard as the whole contraption escaped and fell on the floor, sort of a mood killer.

If one is seeking a painful advanced level nipple clamp ... have at it ... but for a beginner, this equipment is probably too intense. With some experience and increased tolerance they can be a lot of fun, but they should probably not be one's first set of nipple clamps. It took several months of nipple toughness training before I was able to use these successfully. Once I was able to tolerate the weight and tightness they were great and I still think they look amazing. My favorite feature is the time and effort my partner needs to put into applying them for me, it is an extended period of focused attention and accounts for some delicious anticipation.