Hi HT,
You can read a little more about the Reverie sleep systems in post #2 here.
They use good quality materials (latex) and the cylinders in the support system can be configured in different patterns which provide different firmness levels and support “zones” under each part of the body which can help with both alignment and pressure relief … especially for body types, preferences, or circumstances that are more difficult to “fit” to a mattress in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences).
NOTE ADDED: They have since provided the specs of all of their mattresses (see post #6 here) and they have also become a member of the site as well.
Phoenix