Design Your
Own Mattress...
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| The Ergo Number Calculation |
Your ergo number is derived by doing a weighted average of the various compressions that are used to make up your mattress.
Each grade of foam is rated by its density, which determines the durability of the foam and its compression, which indicates the
firmness of each grade. In each density range you can choose from a number of different compressions. For example in the 2.2lb
density you can choose either a 2218 (soft), 2224 (medium soft), 2230 (medium), 2235 (medium firm), 2245 (firm) or 2255
(extra firm).
Since the last two numbers, of the part number, indicate the firmness of the foam then by multiplying the
thickness of each compression you will get the total compression of that particular combination. Once you divide the total
compression by the total thickness you will then get the average compression of the overall mattress or what we refer
to as the ergo number.
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...one layer at a time for
the best comfort and support! |
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At FOAMITE not only can you choose between medium or firm you can actually choose between different levels of medium or firm.
This is accomplished by combining different grades of foam that are the same quality but have different compressions.
Once we figure out where you fall weight wise on our Ergocheck Test Chart (Ergocheck Testing) then we can fine tune the level of firmness even
further to suit your lower back condition or personal preference. For instance, if you weigh less than 140lbs, according to the
scientific test results, you should sleep on a medium soft mattress to avoid uncomfortable pressure points. In the medium soft
category you can choose from within a range of 19 to 23 lbs. per cubic foot - with 19 being the softer side of the range and 23
being the firmer end.
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let us make your bed™