Others, however, disagree Resurge Review with that assessment. It is true that at one time all-natural (rubber tree) latex lacked certain qualities of flexibility and durability, and had the tendency to compact and disintegrate with age. That is no longer true, as manufacturing processes have improved. It is now more a matter of cost. Synthetic latex and blends are cheaper than all-natural latex.
The standard proportion of natural to synthetic is about 60-40. Because of the higher percentage of rubber-tree-based latex, many mattress manufacturers describe their entire mattress as “natural latex.” Keep in mind, though, that it is not really all natural. It is a blend.