What kind of butt implant is this?

These implant are not FDA approved in the USA and are not recommended for use.  They can look saggy and unnatural overtime.  Properly placed solid silicone gluteal implants are best for use in the USA. please only seek advice from a board certified plastic surgeon who specializes in this procedure and Is well known for it.   

Unlike breast implants, silicone gel buttock implants, like Sebbin Biconvex implants, are not FDA approved and thus not legal for buttock implantation in the USA. I actually see about one patient a month that had gel implants done in another country and, although they looked a felt great at first, they are now seeking revision because the implants are either visible on top of the muscle and/or grossly deformed by scar contracture and/or the implant has ruptured several years after placement leaving behind hardened scar tissue and migration of silicone liquid. The soft semi-solid silicone rubber implants used in the USA are much less likely to have these problems if placed correctly within the gluteus muscle AND are considered permanent implants because they cannot rupture and leak silicone gel. In 2015 I created and recently patented a new "Stanton Anatomic" shaped implant that avoids the unnatural effects of round implants, whether silicone gel or rubber . The benefit of this is the fact that ~95% of patients have more of an oval shaped buttock cheek not round, thus a true oval implant (i.e. Stanton Anatomic implant) creates a much more natural and harmonious buttock contour.  This is especially true when the patients bends over, does squats, or pokes their butt out while striking a pose or dancing. Many avid weightlifters, fitness competitors, and athletes from various sports have had these implants without problem of movement, visibility, or drooping.  Glad to be of help.