Thank you for your questions. Implant choices today are more than ever before and it can indeed be very confusing. A breast implant is made up of a shell made of silicone (a plastic rubber type envelope) and that shell or envelope can be either smooth (like a beach ball) or textured (like Velcro). The inside contents of a breast implant may be most commonly silicone gel, or saline (salt water). The silicone gel filled implants are pre-filled and sealed from the factory, and the saline implants arrive sterile yet empty and are filled to the proper volume during the time of surgery by your plastic surgeon. Cohesivity refers to the firmness or softness of the gel within a breast implant. The higher the cohesivity ('highly cohesive"), the firmer. Some women (and/or their partners) prefer one versus the other and that is a personal choice. The "anatomic" or "gummy bear" or "shaped" or "form stable" implants are all terms for highly cohesive implants, all of which will be with textured surfaces, since they need to be oriented one correct way because of their shape. A round implant is always round and therefore cannot have an incorrect orientation, yet the degrees of cohesivity (firm versus soft) can also occur in round implants, which can be either textured or smooth. While all of this can be very confusing, it is important that you consult with a board certified plastic surgeon who can review all of your options with you, and explain in more detail the reasons why any one implant may be best for you. Best of luck to you.