Hi yogiyoda,
Since there are no polyurethane foams made anywhere in the world that do not have petrochemicals in them (to differing degrees) … it is clear to me that their foams are not petroleum free.
You can believe whatever you wish of course but there is evidence to show that their “latex memory foam” material contains no hevea milk (or at least none was found in the chemical analysis). Even their own site shows it contains SBR which is synthetic latex among the ingredients. Even the main components of SBR (Styrene and Butadiene) can by synthesized from either petrochemicals or from other sources.
This also has nothing to do with the “safety” of their foams as you point out … only with their false claims and misleading statements on their website.
Your comments about natural vs synthetic are the topic of many posts in this forum and all over the internet as well and I agree it is completely misused and misleading in many cases. Same goes for the use of the term “organic”.
You can see them in the attachments in post #4 here.
Phoenix