These nipple clamps could be used by both men and women, although I believe that they are more suited to women. This is because these clamps will only work for someone with larger and/or longer nipples, which are more common on women than men. Since they are adjustable, these would be suited for someone who is not very experienced with nipple clamps. They would also work for someone more advanced, although I would not recommend these to someone looking for a high quality pair of clamps.

These clamps are made entirely of metal, except for the tips where the metal is coated with rubber. I'm not sure exactly what type of metal is used, but it is not a very strong variety. The metal of the chains feels like it could possibly break if it's pulled on too hard, and the metal of the actually clamps could be bent or dented without much effort. The springs inside of the clamps could easily become warped, which would seriously damage the functionality of the clamps. The rubber feel sturdy enough to stand up to use, though. It feels a bit tacky, but not overly so and not enough to cause any kind of noticeable discomfort during use. I can't imagine that these clamps would survive for many years with regular use.

The chain connecting these clamps measures 12 inches long and 1/4 inch wide. The size of each clamp is 2 inches long and 1/2 inch wide. The rubber tip is 1/2 inch by 1/2 inch. Each clamp has a screw which is used to adjust the strength of the clamp. The widest that this allows the clamp to open is just under 3/4 of an inch. However, the hinge of the clamp is not sealed, and the clamp easily falls apart when it is opened. These clamps do not stay on nipples very well; they will fall off with even a little bit of motion.

The biggest problem with these clamps is that they fall apart extremely easily. Every time I opened the clamp wide enough to comfortably put it over my nipple, the hinge would come undone and I would end up with the clamp in three pieces.

Store this in a dry place (to prevent any kind of rusting) and away from any other toys that the metal could scratch. You should be able to just wipe away anything that gets on these with a towel.

These came shipped in clear plastic packaging with an insert stating what they were with a picture. Nothing fancy. I wouldn't recommend storing the clamps in this packaging because it is too bulky.

Every single time I tried to use these clamps, they would fall apart. I managed to get the clamps on my nipples once, and they didn't stay on for very long because they ended up falling off as soon as I moved.