These were not as big as I expected considering the statement that they would increase your size 1.5 to 2 cups. I'm a B cup, and these take me to maybe a small C, or more like a solid B to a very full B. So if you are looking for something much more dramatic, these are not it.

I have not had issues others have mentioned with these. They are comfortable, you could easily forget you are wearing them. I have never worn them in a bathing suite but they work with all sorts of bras I own. I've worn them with low-cut tops without them showing through. In fact, I was expecting them to be larger and cover my whole breasts when I bought them and they do not. I do position them differently in different bras and as long as the bra or shirt has enough covering to not show the nipple, then it doesn't really have to be put in one specific way. I have worn them with strapless bras as well with no significant problems.

These are not adhesive and if you plan to wear them without a bra I would think that you might need fashion tape or something similar. However in a bra they do stick a bit to your skin by virtue of the material- which mean for me they do not really move around at all in the bras from where I place them.

I also have noticed no smell, though they say to wash with cold water after every use so if you don't they might start to stink, I'm not sure.