This is my third purchase of the open-back style in 2XL. Theyve totally replaced my lounge tops and sleep wear. Im a 38F/40F and like a little support, and these are perfect. Super comfortable, not at all constricting, hold up great in the wash. I would not wear them out, as they don't give much shape, and I wouldnt wear them to exercise as theres not enough compression or support for impact, but they're perfect for what I want them for.