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Re: [at-l] Sleeping Pads

> [snip]... For example, if I stacked two foam pads on top of each
> other, would their R-values add?

Yes, it's a linear relationship.  Same thing happens when adding
insulation to an already insulated house.

> What is the actual definition of "R-value"?

The "R" stands for resistance to movement of heat.  The higher
the value, the better the insulating effect.

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