Often been refereed to the most comfortable bra on the market, the Cooibe bra comes in one size and full size. Size A - One size comfortably fits sizes 32A to 36C. Size B - Full Size fits 36C and above. Many larger customers find it comfortable as well. They are all seamless, so no hooks or clasps. The back is smooth. Each has removable pads and the straps are adjustable.Final Sale