Hi catalana,
I can’t speak to whether it would be suitable “match” for either or both of you and you would need to do some careful testing on the mattress to assess whether it would be a suitable choice for both of you in terms of “comfort”, firmness, and PPP .
I can certainly make some comments though about the quality and durability of the materials in the mattress.
3" ACR Cushion Layer 2.5lb Foam: You would need to check and see if this layer is memory foam or polyfoam. If it’s memory foam then it will leave a handprint for a short time when you press down on the mattress with your hands and then remove your hands and if it’s memory foam then it would be a very low density and I would avoid it. It’s more likely though that it’s a high performance polyfoam which has a more “instant” response and won’t leave a handprint in which case it would be a durable material that would be suitable for your weight range.
1 Flex Net Insulator: This is an insulating layer that helps prevent the foam comfort layer from compressing into the pocket coils and wouldn’t be an issue in terms of durability.
Coil Density: 744 Foam Encased Coils: They don’t mention the thickness of this component or the gauge of the coils but I’m guessing that it’s a 4" low profile comfort core. Regardless of the thickness though … assuming that the mattress is a good match for you in terms of firmness and PPP and isn’t too soft or “on the edge” of being too soft for you then steel innersprings are a durable component and wouldn’t be a weak link in a mattress in terms of durability.
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If you tend to sleep on the outside edge of the mattress or sit on the edge of your mattress on a regular basis then I would also want to know the density of the foam encasement around the pocket coils to make sure that they are a suitable density for your weight range.
4’ 1.8lb Foam Base with Engineered Articulating Cuts: This is a little lower density than I would normally suggest for someone in your weight range (where I would generally look for minimum 2 lb polyfoam) but it’s also deeper inside the mattress and the layers and components above it would absorb most of the compression forces that come from sleeping on the mattress so it would have a smaller effect on durability than if the same layer was closer to the sleeping surface so I would add a “slight caution” because the risk of premature foam softening would be slightly higher than if the foam density was higher.
Overall … and assuming that the foam surround is a suitable density polyfoam … it would make a “reasonable” choice but it probably wouldn’t be the “best” choice available to you in terms of durability because of the additional risk involved in the bottom layer.
There is more information in post #9 here about the different ways that one mattress can “match” or “approximate” another one. Every layer and component in a mattress (including the cover and any quilting materials) will affect the feel and performance of every other layer and component and the mattress “as a whole” so unless you are able to find another mattress that uses exactly the same type of materials, components, cover and quilting, layer thicknesses, layer firmnesses, and overall design (which would be fairly unlikely) then there really isn’t a reliable way to match one mattress to another one in terms of “comfort”, firmness, and PPP based on the specifications of the mattresses (even assuming that you can find out all the specifications you would need for both mattresses you are comparing in the first place).
Mattress manufacturers generally try to differentiate their mattress from the mattresses made by other manufacturers and don’t normally try to “match” another mattress that is made by a different manufacturer so unless a manufacturer specifically says in their description of a mattress that one of their mattresses in the same general category is specifically designed to “match” or “approximate” another one in terms of firmness or “feel” and PPP and/or they are very familiar with both mattresses and can provide reliable guidance about how they compare based on the “averages” of a larger group of people that have compared them (different people may have very different opinions about how two mattresses compare) … the only reliable way to know for certain how two mattresses would compare for you in terms of how they “feel” or in terms of firmness or PPP would be based on your own careful testing or actual sleeping experience on both of them (regardless of anyone else’s opinions of how they compare which may be different from your own).
In other words it would be very unlikely that you would be able to find another mattress that uses all the same materials and components and I certainly don’t know of one.
I certainly understand. With a local purchase and for the majority of people … careful testing (using the guidelines in the tutorial) and some good guidance will usually result in a mattress choice that is well inside a suitable comfort/support range and will generally be “close enough” so that if any fine tuning is necessary it would be relatively minor and involve different mattress pads, sheets, mattress protectors, or perhaps even a topper if a mattress is too firm (see post #4 here and post #10 here).
For those that are making an online choice where they can’t test a mattress before a purchase, have a history of choosing mattresses that are unsuitable for them even if they have tested them locally, have body types or health considerations that are more challenging and make choosing the most suitable mattress more difficult, or that for whatever reason are more uncertain about whether their choice is “right” for them … then the options you have available after a purchase to fine tune the comfort or support of the mattress or to exchange or return the mattress or individual layers can become a much more important part of each person’s personal value equation.
Of course the other side of this is that exchange or return options are built in to the cost of a mattress so they can add to the cost of a mattress and the majority of people who don’t return or exchange a mattress are the ones who pay for the minority of people who do (see post #3 here and the posts it links to).
Phoenix