Hi coast,
Most of the manufacturers that make mattresses that are very similar to the Savvy Rest mattresses sell online yes but there are also local options in some areas of the country depending on where you live (although I don’t know of any in the Chicago area). Some of the My Green Mattress latex mattresses use the same or similar materials and are two sided but they aren’t component mattresses with zip covers.
You can read a little more about Magniflex in post #6 here and post #2 here and post #3 here and a forum search on Magniflex (you can just click the link) will bring up more information and feedback about them as well. I would make sure that you confirm the quality/density of all the layers (see this article) so you can confirm there are no weak links in any of their mattresses you are looking at if you are considering them.
Phoenix