3. Breast Implant Projection (standard vs. high profile)
Breast implants are designed so that, as volume increases, so does diameter (the footprint of the implant) and projection (the amount it sticks out, away from your body).

Standard implants are designed so that MOST women who choose a given volume will be able to accommodate the breast implant's diameter beneath her breasts. This is so because women with narrower breast diameters often have smaller bodies and tend to choose smaller breast implants; women with wider breast diameters often have larger body frames and tend to choose larger breast implants. In other words, women tend naturally to choose an implant volume that is in proportion with body size and breast diameter, and the breast implants were designed in anticipation of that.
With a High Profile Implant, the volume is the same, but the diameter (footprint) is narrower and the projection (the amount that it sticks out away from your body) is greater.

4. Breast Implant surface (textured or smooth)
Implant surface is smooth or textured. Once the implants are in place under your breasts, it is impossible to tell whether you have smooth or textured implants. A smooth implant is just that - as smooth as the surface of a balloon. Textured implants are rough and mostly preffered.

5. Position of Implant (under or over the muscle)
By implant position, plastic surgeons are referring to whether the breast implant should be placed above or below the pectoralis muscle. Here is an explanation of the advantages and disadvantages of both options.
The advantages of placing the breast implant above the muscle includes less discomfort post-operatively, less swelling, and less chance that the breast will appear to move when you are exercising your upper body.

Movement during exercise has been a great concern for many women. Athletic women should consider placement of the implant above the muscle (as long as they have adequate breast tissue and body fat) to avoid breast distortion during flexing. Simply put, if your breast implants are under the muscle, then when you flex your pectoralis muscles (as you often do during workouts), your breasts may appear to move. Sometimes (though not commonly) the breast motion will appear quite distorted.

One drawback is that rippling can be a significant cosmetic problem that can occur when the implant is placed over the muscle. (See Breast Implant Risks and Complications for an explanation of these things.)

The advantages for placing the implants under the muscle include less interference with a mammography and less rippling in the upper half of the breast. Also, there is more cushion between the implant and skin. In general, thin and small-breasted women are probably better off with implants under the muscle

Placement of the implants under the muscle has few drawbacks, many of which are temporary. The discomfort after surgery can be heightened along with more swelling. You may also find that your breast appears to move when you are exercising your upper body.