Hi restnight,
Talalay is a production method for making latex cores so both blended Talalay and 100% natural Talalay are both “pure” Talalay since they were both made with the same production method.
There is more about the pros and cons of blended vs 100% natural Talalay in post #2 here. Basically the blended is a little more durable (in the lower ILD’s at least) and pressure relieving and less costly and the 100% natural is denser and more elastic and “supportive”, and more costly.
Both of them are certified for harmful substances and VOC’s with the same testing criteria (Oeko-Tex standard 100).
I’m glad you’re checking and I noticed that another forum member listed the same materials and layers as you did. If it’s 12" then the specs you listed are probably correct.
The closest forum list to Jonesboro would be the Memphis list in post #2 here but it’s a fair drive away. It also includes the closest factory direct manufacturer I’m aware of that would probably make two sided mattresses.
I did take a quick look around the Jonesboro area and these are the better “possibilities” I could see based on the information on their site. I’ve also included the manufacturers they carry that I would consider if I was looking for a mattress in the area but only if they can provide all the information you need about the materials in their mattresses to make an informed choice (see this article).
The list includes all types of mattresses (for others who may read this from the area) but if you are focused on latex then Jamison, Restonic, and Pure Latex Bliss all make latex mattresses although I would phone first to confirm what they have on their showroom floor.
http://furnitureatrelaxstation.com/ Jonesboro, AR. Sleeptronic.
Tucker's Furniture and Appliance - Furniture and Appliances in Rogers, Springdale and Jonesboro AR Jonesboro, AR. Restonic
https://www.cleosfurniture.com/ Jonesboro, AR. Sleeptronic, Capital Bedding
Furniture and Mattress in Jonesboro, Paragould and Blytheville AR | Harris Furniture Jonesboro, AR. Jamison
Home Furniture and Mattreses in Paragould, Jonesboro and Walnut Ridge AR | Homeplace Furniture Paragould, AR. Pure Latex Bliss, Restonic.
http://www.yelp.com/biz/carls-furniture-galleries-paragould Paragould, AR. Dutchcraft?
Phoenix