Hi mtjag,
I did a quick forum search and it doesn’t seem that anyone has mentioned this specific mattress previously on the forum. Hopefully any of the members here that have purchased it will see your post and share their comments and feedback about it.
I would be very cautious about using other people’s experiences on a mattress though (either positive or negative) as a reliable source of information or guidance about how suitable a mattress or any specific material may be for you because each person can be very different and in many cases they can be more misleading than helpful because a mattress that would be a perfect choice for one person may be completely unsuitable for someone else to sleep on (see post #13 here) either in terms of firmness or softness or in terms of temperature regulation.
Some memory foam designs and materials will sleep cooler than others so depending on where you are in the “oven to iceberg” range, the specific design of a memory foam mattress, and the type of memory foam it uses, and on the type of mattress protector and sheets you use, you may find that you will be OK on some memory foam mattresses in terms of sleeping temperature even if you tend to sleep warmer on others.
There is more about some of the ways that can be used to cool down down memory foam in post #6 here and there is more about the many variables that can affect temperature regulation in post #2 here and the posts it links to that can help you make a more informed choice about the types of materials and components and the types of mattresses that will have the best chance of keeping you in a temperature range that you are comfortable with.
In very general terms … most people probably wouldn’t have a temperature regulation issue with this mattress but there may be a minority that do with any type of memory foam or gel memory foam because while gel memory foams can be cool to the touch, they tend to have a more temporary effect on sleeping temperature so they can help when you go to sleep at night but once the temperature equalizes the temperature regulation properties of the gel may not last throughout the course of the night (see post #2 here for more about gel memory foams).
It’s good to see that Therapedic listed the type and quality of all the layers in this mattress on their website (it’s very uncommon that a manufacturer lists meaningful specs for their mattresses) and while it’s not related to temperature regulation … I wanted to mention that all the materials in this mattress are good quality materials and there are no weak links in the mattress in terms of durability.
Phoenix