The latest evolution in mattress design is the ability to rearrange separate layers within the mattress to ensure maximum comfort. The Hevean 10 Latex Mattress includes five separate layers that are each 2” thick, and are each different levels of firmness. This mattress offers an unprecedented level of comfort which can be adjusted for the unique needs of the sleeper. Someone with back or knee problems who needs to fine-tune their sleep surface after surgery might benefit from this mattress. Athletes who need different firmness levels when training, competing, and recovering, might also maximize their health with this mattress.