I am not quite sure why some other users are claiming that these are too big. I just whipped out a ruler for your sakes, and the diameter of the circle on these is just shy of 3/4ths of an inch. When I opened the package, I thought they appeared a little big, but after trying them on I discovered they were perfect. My boyfriend really loves them. They aren't necessarily 100% comfortable, and they show through bras and swimsuits mire than some of my other pieces, but I still really love them! they look awesome.