The most commonly used tear drop shaped implants are what's often referred to as the "gummy bear" style silicone gel implants. They are really officially known as highly cohesive, form stable, anatomically shaped silicone gel breast implants. They are the newest generation silicone gel breast implants, and are personally my favorite to use for breast augmentation (as well as reconstructive breast surgery) for the many advantages they offer over the more traditional round silicone gel breast implants. There are 3 major silicone breast implant manufacturers approved for use here in the US by the FDA: Allergan (Natrelle line), Mentor and Sientra. Allergan's version of the gummy bears (which they known as the Style 410) I feel offer the most advantages over the other 2 brands because their version is the most cohesive and most form stable and has the least rippling and wrinkling and least collapse of the upper pole. The more commonly used (classic or traditional style) round silicone gel implants the public is more familiar with are not usually referred to "cohesive silicone implants." In the past and before the gummy bear silicone gel implants became FDA approved (only a few years ago), some of the breast implant manufacturers may have tried to apply the description to their classic or traditional silicone implants to imply (and confuse the public) that their traditional silicone implants were "cohesive" like the HIGHLY COHESIVE gummy bear implant, but they are not the same consistency or quality so they do not offer the same advantages as the newer gummy bear silicone gel implants. They highly cohesiveness of the gummy bears impart a more dense consistency thereby exhibit less rippling and wrinkling, therefore have a lower rate of rupture and capsular contracture and are also able to maintain their shape (and the shape of the breast) for a longer period of time. If you cut a classic/ traditional silicone breast implant in half, it will look like a block of Jello cut in half. If you cut a HIGHLY COHESIVE gummy bear silicone gel breast implant in half, it will look more like gummy bears cut in half (or just a little softer). The difference is significant so the implant characteristics, performance and durability are much different. Because the gummy bear implant material is form- stable, it is shaped anatomically like a breast so it can look more natural especially for women who have little breast tissue. Also, they can feel more natural because they do not wrinkle much (and palpability of the wrinkling is what can "give it away"). This is why more and more women are choosing the gummy bears- to "keep them guessing." Gummy bear implants are more difficult to use for breast augmentation (especially if the surgeon does not have as much experience in using them), and they have very little room for error. One has to be more precise with the dissection of the pocket and placement of the implants. There are fewer surgeons offering them because unless you have had a lot of experience putting them in, you are less likely to feel comfortable offering them. I would recommend you seek out board certified plastic surgeons who have had a lot of experience putting them in before you make your decision. You may click on my link below to see some before and after pics of these gummy bear implants. Best wishes.