Im a 40D and ordered according to their sizing recommendation. These are comfortable, decent amount of support for probably low to medium impact activity, and are cut properly for larger cup sizes. Some sports bras just increase the band size and strap length and neglect to alter the front portion to accommodate and cover a larger cup size. My only complaint is that the strap sections are a bit narrow and sit close to the neck so if Im wearing one too long I get some neck pain from the weight being supported more by neck muscles than the shoulders. If they could adjust their larger cuts to allow for that these would be perfect!