My rib cage is 33 inches around. This means that 32 band size bras are way too tight and 34s don't give enough support. These are the perfect solution. Since it has four hooks I can put them in any bra, even if it's a three hook bra it just means that I have one hook left over. The variety of colors is nice so that I can match them to ny bras although since it's under my clothes I don't worry too much.