Abstract: A mattress system. The mattress system including a foam mattress having a plurality of stacked layers, wherein each of the stacked layers has a top surface and a bottom surface thereby defining a plurality of interstitial pockets and one or more rigid plates configured to be inserted into the one or more plurality of interstitial pockets, thereby enabling the mattress system be selectively optimized to provide a desired structural support and firmness for a user's body type and weight.