Hi Fisherbrains,
The Dormeo website also doesn’t contain any meaningful information about the density of the polyfoam and memory foam layers and components in their mattresses either so you would need to find out all the information here to confirm there are no lower quality materials or weak links that could compromise the durability or useful life of any of their mattresses … not just the models that are sold at Sleep Country.
I’m not sure what you’ve read since you found the site but just in case you haven’t read it yet … the first place to start your research is the mattress shopping tutorial here which includes all the basic information, steps, and guidelines that can help you make the best possible choice … and perhaps more importantly know how and why to avoid the worst ones.
Two of the most important links in the tutorial that I would especially make sure you’ve read are post #2 here which has more about the different ways to choose a suitable mattress (either locally or online) that is the best “match” for you in terms of “comfort”, firmness, and PPP that can help you assess and minimize the risks of making a choice that doesn’t turn out as well as you hoped for and post #13 here which has more about the most important parts of the “value” of a mattress purchase which can help you make more meaningful quality/value comparisons between mattresses in terms of suitability (how well he will sleep), durability (how long he will sleep well), and the overall value of a mattress compared to your other finalists based on all the parts of your personal value equation that are most important to you (including the price of course and the options you have available after a purchase if your choice doesn’t turn out as well as you hoped for).
If you are considering online options then the mattress shopping tutorial includes several links to lists of many of the better online options I’m aware of (in the optional online step) that include many different types and categories of mattresses that use different materials and components in a wide range of designs, budgets, firmness levels, and with different return/exchange policies that may be well worth considering.
There may also be some good options available to you locally that you can test in person before a purchase and if you let me know your city or zip code I’d be happy to let you know about the better options or possibilities I’m aware of in your area as well.
Phoenix