The implants range in size as well as diameter and projection. Your best bet is to find a surgeon that will help you picked based on the look you are trying to achieve. You should not need to worry about the available implant choices. Communicate with the surgeon and they will use all of the information to pick the right device. The implants range from 150 to 960 cc.The best way to determine the size that fits your personal perception of the perfect breast is to try on sizers. This way you can see how they fit on you, how they add to your current volume, and whether they fit your frame. Mentor HP profile saline implants have base diameters that range from 8.8 cm (very narrow) to 13.8 cm (moderately wide). The patients should be allowed to choose the volume. Then the surgeon carefully considers the base diameter, projection, profile, manufacturer, and fill material that will achieve the patients goals of size as well as qualitative look (natural, intermediate, or bold upper pole fullness or projection), all the while taking into consideration the patient's anatomic features that will affect the outcome. HP implants can be made to look very natural or very augmented, depending on where in the range the implants are filled to achieve a particular volume. At the low end of the fill range, HP implants do not have the upper pole fullness that most people associate with the fake look. On the other hand, a fake over-augmented look can be created with a moderate profile implant if it is overfilled (a common practice for surgeons that commonly use moderate profile implants). In addition, too wide an implant will put the volume past the anterior axillary fold (side boob), which in my opinion, looks more fake than upper pole fullness. So there are many factors that need to be considered. The experience of the surgeon and the degree to which they explain the options to you is of utmost importance. The subtlety in the final outcome is not achieved by which profile implant is used, it is determined by the skill in the creation of the pocket, the choice of volume, and where in the range the implant is filled.