Each layer of material is there for a reason and adds another level of designed support. Additional layers generally cost more, so if you see a single-layer foam design selling at a premium price, beware because it will not last long or it will be very comfortable. A 2-layer mattress is like putting a band-aid on the flaws from the 1st layer. 3-layer designs will get you to the average ordinary mattress that’s most common with minimal engineering to maximize profits.  4 layers are where recognizable comfort starts to begin.  5 layers are where the highly engineered premium designs really shine through.  Be careful not to fall for the multi-layer designs where they only contain a single thin premium layer.  All of AmoreBeds’ layers consist of the highest quality premium materials available in the industry today.  To avoid layers of misleading fluff, we do not factor our cover or edge-support as “layers” like others often do.