Sean A. Simon, MD

The important thing to understand is that the breast implants themselves do not change.  A patient's tissues (skin and muscle) change over time around the implant.  In general, silicone implants tend to feel softer and more supple compared with saline implants.  After surgery, augmented breasts tend to be quite firm before the tissues stretch and over the next several weeks, the body tissues stretch and accomodate the implants resulting in a more supple, natural feel.  Of course the size of the implants and the quality of the surrounding tissues has a lot to do with the final feel of the breasts after surgery. 

Sean Simon MD