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Specifications For Our RV Model - available in twin, full and queen sizes

* Foam density – 1.8 - 1.9 lbs per cubic foot ( high density)
* IFD (indentation force deflection)– 48 - 50lbs ( high compression)
* Foam thickness - 5 or 8 inches.

What this means

INDENTATION FORCE DEFLECTION

* The Indentation Force Deflection (IFD) number represents the pounds of force required to indent a foam sample by a specified percentage of its original thickness.
* IDF is the measure of the foams firmness.

DENSITY

* Density is a measurement of the pounds per cubic foot. It is one of the most important of all form properties. The lower the density, the more air space there is in the foam.
* High density foam products generally offer a great deal of support.

HOW DENSITY AND IFD AFFECT FOAM PERFORMANCE

* High density foams can be made very soft.
Low density foams can be made very firm.
There is no such thing as a "hard" or "soft" density.
* There is a difference between firmness and support.
*Higher density foam helps prevent the feeling of having the foam collapse beneath the body weight.

IFD is a measurement the support of the foam.

Support is the foam's ability to "push back" against weight and prevent the foam from "bottoming out."

OTHER FACTORS

Foam durability, "flex fatigue" and "compression set" are other terms related foam performance. We concern ourselves with all of these factors and more.
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There are books written about the physics and chemistry of foam. For more information we refer you to the "Polyurethane Foam Association".
Their web address is www.pfa.org