Hi Buffett,
Talalay GL fast response used to be called Celsion but they both are blended Talalay latex that uses phase change gel in the forumulation.
[quote]I think they have 1 inch at bottom for sure if we go by their dimension diagram given on
www.healthyback.com/products/Healthyback...e-latex-mattress/813[/quote]
This is the diagram for the first version of PLB and theirs has always used the Celsion / Talaay GL fast response material and the diagram may not be current. They should be able to provide you with the specifics or confirm the diagram is accurate (and what the bottom 1" of material is although it’s not an issue in terms of quality or durability).
Heat is not typically an issue with Talalay latex although there are other factors involved with temperature regulation than can lead to a mattress sleeping warmer for some people no matter what type of foam is used (see post #2 here). The gel in the Celsion / Talalay GL fast response material would add some temporary temperature regulating benefits while you are going to sleep until temperatures equalized. Ventilation and moisture wicking are always the most important temperature regulating technology in a mattress.
Phoenix