Hi NYGiants,
The video doesn’t include the thickness of the foam layers which I would want to know but it does say that all the polyfoam in the top layers and the quilting in the Nettleton are 1.5 lb density which is a lower quality/density material than I would suggest for a one sided mattress in the durability guidelines here and if a mattress has more than “about an inch or so” of lower quality/density polyfoam in the upper layers of the mattress (which it certainly appears to have) I would consider it to be a weak link in the mattress and I would avoid it because the risk of premature foam softening and breakdown would be too high.
The spring and the side support are fine and the latex is also a good quality and durable material but it’s only a very thin layer and the quality/durability of a mattress depends on it’s weakest link not on whether there are some thin layers of better quality material in the design.
Phoenix