Hi countinsheep,
Savvy Rest doesn’t provide the exact ILD’s of their layers but they do provide the option of choosing either 100% natural Talalay or certified organic Dunlop in their mattress layers. There is more about the different types and blends of latex in post #6 here and there is more about the general differences between Dunlop and Talalay in post #7 here.
Your own careful testing and/or your actual personal experience is the most reliable way to know whether any mattress is a good “match” for you in terms of comfort, firmness, and PPP but when you can’t test a mattress in person then the most reliable source of guidance is always a more detailed phone conversation with a knowledgeable and experienced retailer or manufacturer that has your best interests at heart (which would certainly include SleepEZ) and who can help “talk you through” the specifics of their mattresses and the properties and “feel” of the materials they are using (fast or slow response, resilience, firmness, etc) and the options they have available that may be the best “match” for you based on the information you provide them, any local testing you have done or mattresses you have slept on and liked or other mattresses you are considering that they are familiar with, and the “averages” of other customers that are similar to you. They will know more about “matching” their specific mattress designs and firmness levels to different body types, sleeping positions, and preferences (or to other mattresses that they are familiar with such as the Savvy Rest combination that you tried) than anyone else.
Phoenix