Dear Alejandra,
The butt implants come in different sizes, shapes and softness. The sizes varie from 190 cc to 700 cc on the shelve. Special order are possible too. The selected size depends on the body size, the butt size and the desired size. The shape can be round or oval. The oval can be also gradual round surface or bubble butt shape where it is thin above and full at the bottom. The silicone implants can be very soft or hard and smooth or textured. In my practice I use smooth, oval and very soft implants. The most common sizes are 375cc - 565cc. Most importantly, find a board certified plastic surgeon that you trust , who performed lots of butt implants surgery and you like his or hers results.
Best of luck,
Dr Widder