If you enjoy nipple play and stimulation, then you most likely enjoy having these little suckers in your toy box. They do exactly what they were designed to do, latch on to the nipple with suction, thus increasing sensation and blood flow to the area. They are easy to use, so anyone with average finger dexterity should be able to make them work, but a little practice may be necessary to apply them without fumbling or making the moment awkward.
We did try them on other areas of the body as well such as the labia, clit and the head of the cock. Didn't seem to get much of a sensation in those areas, and on the clit it had a negative feeling of pinching, ouch. If there is hair in the area you are trying to get them to stick, it will not work. So if there is hair down there, don't waste your time.
We have found them most useful when having an extended period of play or having them attached while getting a full body massage or genital massage. Once they have been on a while your mind kind of tunes them out, but a gentle tug reminds me that they are there and doing their job.
We found that they can be used in sensation play too. If you fill them with hot tap water (115 F.)then attach them, there is a nice little hot sensation for about 15 seconds then it cools. As it cools it sucks on even harder. They can be filled with cold water too, but it is harder to get them on because the plastic is cold and hard to handle.
All in all, it is a fun toy and can result in increased nipple sensation and have a good laugh too. You need to have a since of humor because they do look a little ridiculous. Life is too short to not have fun.

The Mini nipple suckers are made out of PVC and are smooth to the touch. We did not notice any sharp edges around the opening. The firmness of the suckers depends on the temperature. If you try and use them when they are cold it is hard to get them to suck on. You can warm them in your mouth, but it is not recommended due to the fact that they could be a chocking hazard. They appear to be extremely durable. When attached to the nipple, they make the nipple into a tiny knob that can be pulled and slightly twisted. The sensation is different than having the nipple directly pinched and pulled.

There is not a lot to tell you about the design and shape. What you see is what you get. They come in two colors: pink and purple. The pink ones look like a clown nose when attached (makes for giggles). They are easy to get on and off and a little saliva or oil helps them suck on. When taking them off, it might be a good idea to release the suction before pulling them off too quickly.
They are just a little under an inch in diameter and should fit most, if not all nipples. There may be a few nipples out there that are too large for the suckers to fit, but it would be fun trying. Clean up is easy with just soap and water.
Other reviews talked about using the suckers on the clit. We found that to be a bit difficult due to hair and awkward positioning to get it on just right. They tended to give a pinching sensation.

If we took the time to make sure the mini suckers were placed on with good suction, they would not come off during play. Once removed, my nipples were very sensitive in a good way.

Care is simple with just soap and water for clean-up. Store them with the rest of our toys making sure that they do not come in contact with other toys by wrapping them in a tissue.

Th Mini suckers came in the basic clam-shell plastic case. The suckers were displayed through the clear plastic and not discreet in the least. No instructions were provided and none needed.

We both enjoy this toy for foreplay. It allows for nipple stimulation while focused on other areas of the body. They do the warming up for you, so when they are removed the nipples are more sensitive and ready for attention.