1 and a half inch comfort layer

Hi adler223,

That would depend entirely on the specifics of the top layer and the other layers and components in the mattress.

If you were a side sleeper for example you may need the top 3 or 4" of the mattress to be fairly soft to relieve pressure points (regardless of the thickness of any individual layer) so you may need a little softer support core which can “help” the top layer relieve pressure. If you were a stomach sleeper that was more concerned about your pelvis hammocking into the mattress and causing back and alignment issues then you would probably need less softness and the 1.5" over a firmer core may work fine.

One of the goals of a mattress is that the pressure relieving cradle that contours to your body is deep enough to relieve pressure for your body type and sleeping positions and the thickness and firmness of the top layer and the softness/firmness of the base layer all contribute to this.

Post #2 here has some links to some of the concepts and theory about how different layers and designs can work for different body types and sleeping positions but all the layers and components in a mattress interact and affect all the other layers and the best way to know whether a design works well for you is by careful and objective testing for PPP (Posture and alignment, Pressure relief, and Personal preferences) following the testing guidelines in post #1 here.

There are no “layer thickness rules” … only the combination of materials and components that works best for each individual person.

A two sided mattress will also be more durable than a one sided mattress as long as it’s regularly flipped and rotated … even with a material that is as durable as latex.

@buttercupbetty

Latex is a very durable material even in a one sided mattress. Some one sided mattresses also have individual components or layers that can be flipped or rotated or even replaced that can also extend the life of the mattress and some “sleeping systems” have a base mattress and a topper where the topper can also be flipped and rotated or replaced which can also extend the life of the layers or the mattress.

While any one sided mattress will be less durable than a two sided mattress in an apples to apples comparison that uses the same materials … they have the advantage of being able to use more complex layering designs than two sided mattresses because you can use thicker or multiple layers of softer foam on top of a firm support layer in a one sided design that isn’t possible in a two sided design because you would have too much softer latex on the bottom which would be a risk for support and alignment issues.

Everything has a tradeoff :slight_smile:

Phoenix