Hey Beth,
Thanks for your reply .
Using the TMU site search, I found this older Phoenix post featuring an impressive list of mattress manufacturers in the Ft Lauderdale/ Boca Raton area for your review. Some may no longer be operational as the list is an older one, but it should be a good research starting point.
It is only a “small difference” if the feeling of a particular layer firmness isn’t remarkably noticeable to the individual. In regards to your 3" 21 ILD Talalay latex topper, consider this: in your current layering setup, you are experiencing lower back pain as well as sore arms and poor arm circulation, suggesting there is a pressure point situation involved somewhere. Instead of opting for a 19 ILD layer (as discussed previously, ILD is a range in pressure testing value, not an absolute measurement, so an 18-20 ILD range could yield a firmness feel on a scale of 18, 19, and 20), you may consider testing a softer/ more plush topper as the one you have now doesn’t seem to offer correct comfort for your body profile.
A four layer set up may be a bit much, Beth. You should be fine with three /3" layers, once you get the upper comfort layer settled. Please review the list of manufacturers in the link above to determine if there is a showroom location in your area for safe testing of softer Talalay mattresses, someone should have mattress pillow tops that you could try. You may find this list of mattress shopping questionshelpful for discussion topics once you begin local shopping. Make some preliminary phone calls to determine who offers what you are looking for and what COVID-19 procedures are in place (for example, a showroom may offer visits by appointment only to limit a safe number of shoppers at a given time). Be sure to plan enough time for testing each one and if possible, have someone photograph your side positioning each for body alignment comparisons and take notes of your experiences as well.
The more questions, the better Beth . I may not have all of the answers or even the “right” answer, as only you can “feel” what you feel in terms of comfort and support on a mattress. I will do what I can to offer suggestions in hopes that they are of some use. Good luck with your research and keep us updated with any news.
Thanks,
Sensei