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2 vs 3 Layers? 05 Apr 2015 17:49 #1

Hello, I've spent yet the majority of another day researching latex mattresses. So much great information! I visited a local Savvy Rest store and I liked this 3 layer combination for a total of 9 inches:
1. Top layer = soft talalay
2. Mid layer = medium dunlop
3. Bottom layer = firm dunlop
In visiting several online sites recommended here, I noticed that some of them only offer a 6" layer, plus a 3 "layer on top for a total of 2 layers.
Is there a recommended comparable of 2 layers that equates to the 3 layers I liked?
Also, in general is 2 layers or 3 layers preferable? Advantages? Disadvantages?
Thanks for any info or suggestions.

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2 vs 3 Layers? 05 Apr 2015 18:11 #2

Hi cpcrn,

Also, in general is 2 layers or 3 layers preferable? Advantages? Disadvantages?
Thanks for any info or suggestions.


There is more about the pros and cons of a support core that is a single 6" layer vs two 3" layers in post #2 here .

Is there a recommended comparable of 2 layers that equates to the 3 layers I liked?


If two 3" layers are both the same ILD as a single 6" layer then they would be very closely comparable. If the single 6" layer is the same ILD as the middle layer in the three layer combination then overall it would be slightly softer (because the bottom half of the single 6" layer would be softer than the bottom 3" layer) but since deeper layers have a less noticeable effect on what you "feel" than layers that are closer to the surface some people may feel the difference and some may not.

If the single 6" layer is the same ILD as the bottom layer then it would feel firmer than the three layer combination and since the middle 3" that is firmer would be closer to the surface more people would notice the difference.

If the ILD of a single layer is different from either of the two 3" layers then it would depend on the specifics and how the ILD of the middle 3" compared would be more noticeable than how the ILD of the bottom 3" compared.

Phoenix
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Last edit: by Phoenix.

2 vs 3 Layers? 06 Apr 2015 15:35 #3

Thanks for the quick response. I should have specified the ILD #s from Savvy Rest:.
1. Top layer = soft talalay (N2S=15-20)
2. Mid layer = medium dunlop (31-39)
3. Bottom layer = firm dunlop (40+)

I did read the post you recommended. However, I'm wondering that since the bottom 2 layers of my configuration are different, what would be recommended if I had only 2 layers. Should the 6" bottom layer be medium or firm if it is dunlop? Would I be more able to match the feel of the 3" medium and 3" firm, with a 6" layer of talalay? If so, med. or firm?
Once, again, thanks for sharing your wealth of knowledge.

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2 vs 3 Layers? 06 Apr 2015 16:20 #4

Hi cpcrn

Should the 6" bottom layer be medium or firm if it is dunlop? Would I be more able to match the feel of the 3" medium and 3" firm, with a 6" layer of talalay? If so, med. or firm?


I don't make specific recommendations for either the type of latex (this is a preference choice) or the firmness of individual layers because when you can't test a mattress in person then a more detailed conversation with a knowledgeable and experienced manufacturer will always be a more reliable source of guidance about which of their firmness or layering options would be the best "match" for your specific needs and preferences in terms of PPP or which of the options they have available would be the closest "match" to another mattress than I am. They will know more about the options they have available than anyone else. I would also keep in mind that the two Dunlop layers in the Savvy Rest are specified as a very wide ILD range so if you were to choose a medium layer that is 31 ILD then for most people it would probably feel different from a "medium" layer that is 39 ILD.

There is also more about the different ways to choose a mattress (either locally or online) that is the most suitable "match" for your specific needs and preferences (or to another mattress) and how to identify and minimize the risks of making a choice that doesn't turn out as well as you hoped for that are involved in each of them in post #2 here .

As I outlined in my previous reply ... none of the options you are considering for a single 6" layer (instead of two 3" layers that are a different firmness or ILD) would be exactly the same as the 3 layer Savvy Rest mattress you are testing ... but since the upper layers of a mattress will have a bigger effect on what most people feel than the deeper layers ... a medium 6" layer that was the same ILD as the middle layer of the Savvy Rest in "real life" (not just somewhere in the same range) would probably be the closest approximation assuming that all the other variables (including the firmness of the top 3" layer and the specifics of the cover) were also very close approximations as well. How much difference you may feel between them would depend on your body weight and your sensitivity to smaller differences in a mattress and where you are in the range between "princess and the pea" and "I can sleep on anything". Differences that are quite noticeable to some people may not be noticeable at all to others.

If you replace the Dunlop layers you tested with Talalay then the feel would be different yet and the difference between them would probably be even more noticeable for most people even if the actual firmness (regardless of the specified ILD of the Talalay) was the same. There is more about the differences between Dunlop and Talalay in post #7 here .

If a mattress you are considering has a different design or components or different firmness options than a mattress you have tested then choosing which of the options or combinations you have available from any particular manufacturer would be a matter of talking with them and then making a "best judgement" choice about which one is likely to be "close enough" for you because none of them would be exactly the same.

Phoenix
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Last edit: by Phoenix.
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