There are two things that you must know about the Butterfly Clamps right off the bat. 1) These are NOT for beginners or the faint of heart, and 2) the clamps are much larger than they appear in pictures. The part that serves as the "teeth," where the clamps attach to the nipple are not large, but the part that you squeeze to open the clamp is. Not too large, just much larger than they appear to be in pictures. I was shocked by the size of these when I opened the box. When I first got them, I tweeted that they looked like Chinese torture devices! Yeah, so they're big.

They're also mean, but in the best way possible. One of my complaints about my other clamps was that they would not get tight enough. That is definitely not a problem with these. I was so shocked by how tight they were that my next tweet about that was that maybe they *were* Chinese torture devices! The clamps have what appears to be rubber textured coating, with little raised dots to help them grip that serve as the "teeth." They're weighted by a chain. They way that these are designed to work is that they clamp on and then when you tug on the chain, it causes them to tighten. And tighten they do, hard and fast!

My other biggest complaint about my other clamps is that they wouldn't stay on. I could get them to stay on the tightest setting, but could not tug on them at all. But not with the Butterfly Clamps! Once they latch on, they're not letting go! These do not come off no matter how hard I tug them. I can yank, tug, pull, and twist, and these stay put, even on my tiny nipples. These are also very easy to put on and remove. Just squeeze and they open right up.

These have very quickly become my favorite clamps that I've ever tried. I think they're great. However, they are definitely not for beginners, as they pack quite a mean bite. Which is, of course, just how I like it.

My feelings about these clamps hasn't changed a bit. I loved them originally and I love them now. I've experimented with them on my labia as well as my nipples and they HURT both places, but I'm a pain slut. I've still been unable to find any way that they will slip off unless you want them to. Still the only clamps I've ever used that stay on snuggly no matter what. They remain my favorite clamps!