Sientra makes only silicone gel implants (and saline tissue expanders), in various shapes, and both textured and smooth surfaces.Smooth Round Moderate profile: 190-600ccSmooth Round High profile: 185-695ccTextured Round Low profile: 160-700ccTextured Round Moderate profile: 175-695ccTextured Round High profile: 190-565ccTextured Shaped Round Base High profile: 200-425ccTextured Shaped Oval Base Low profile: 170-510ccTextured Shaped Oval Base Moderate profile: 180-700ccTextured Shaped Oval Base High profile: 180-550ccTextured Shaped Classic Base Moderate profile: 180-450ccAs you can see, there are lots of options, with the largest implants (textured surface) up to 700cc, which will be suitable for the vast majority of cosmetic breast augmentation patients, and many breast reconstruction patients. Both Mentor and Allergan make 800cc silicone gel implants, and saline implants that can be filled to larger than 800cc.FDA approval is lacking for larger implant sizes because of the (relatively) lower numbers of patients requesting them and the sheer expense of "proving" their safety despite having done that for the smaller existing sizes.I hope this helps answer your question! Best wishes! Dr. Tholen