Memory Foam Mattress Topper
All foam is not created equal and neither is memory foam. There are many different densities and compressions of memory foam that will determine how long the foam will last before sagging or softening up with use. In addition to the type of memory foam that is used as a mattress topper, it is also important to have a good middle transition layer and a bottom layer for long-lasting support and durability. I can't stress this enough, the three layers, in the right thickness and compression, work together as a system to give you comfort, support, and durability.