Hay fellow Texas. We end up every year near McKinney TX. Our OEM King size mattress went south and our Dr. told us to get a custom mattress and use natural latex rubber. Our mattress is made of natural latex with a firm core and a comfort layer of organic cotton. It has no formaldehyde in it. Here is a website about
Natural Latex compared to memory foam rubber mattress.
Sleep Craft Mattress Company
1344 West Main Street, Lewisville, TX 75067
972-434-1008
Something else. An RV King Mattress is 72" x 80". On our platform it was squeezed in between the sides of the frame making it hard to get out and push back in. So we ordered a 71" x 80" mattress with an 8" height, making it easier to pull out and push back in. We told them we did not want the RV sides but regular firmness all the way around. RV Mattresses can have stiffer sides because people sit on them quite often.
Thats what we did.
BC