What is the thinking behind making the cohesive or gummy bear implant anatomically contoured?

There is a gentle curve to the breast. The top portion protrudes less, the bottom more, creating a gentle slope. The argument for a shaped gummy bear breast implants makes sense intuitively only. That is, a formed breast implant will maintain its shape at the top and not sag to the bottom, as would a more liquid implant. This is cannot be true, not because I disagree with it but because liquids are non-compressible, as are solids. A more liquid-like implant may be more prone to deformation through gravity, but all that would cause is rippling, as the down pulling silicone would exert traction on the top portion of the implant.