Gear Tech

Sleeping Pad R-Value Standard FAQ: ASTM FF3340


The Sleeping Pad R-Value Standard The Sleeping Pad R-Value Industry Standard: ASTM FF3340, defines a rigorous and reliable methodology for measuring the R-Value of all sleeping pads, including air mattresses, self-inflating pads, and foam pads. It was rolled out to consumers in …

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Backpacking Quilt Temperature Ratings

Thermal images of a quilt with box baffles and a quilt with sewn-through baffles. Photo courtesy of Therm-a-Rest.

An Interview with Therm-a-Rest’s Quilt Team How much can you trust the temperature ratings that gear manufacturers give their backpacking quilts when there isn’t any standardized way of measuring them, like there is with sleeping bags? Why do some people sleep colder in …

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