What the number can tell you
When product-level evidence ties a value to a comparable test method, R-values can support a cross-product view of thermal resistance. OutdoorSpecs keeps the reported value, its standard attribution, evidence scope, and variant context together.
What it cannot tell you alone
R-value does not predict a person’s comfort temperature. Ground conditions, sleeping bag performance, shelter, clothing, body, and setup also matter. OutdoorSpecs does not convert R-values to temperatures or present them as a universal comfort result.
Reported is not automatically comparable
A manufacturer-reported number may be useful to read while lacking evidence that connects that product or value to ASTM F3340. In that case OutdoorSpecs displays the number with its state but excludes it from ASTM-qualified filters, observations, and charts.
Estimates stay estimates
A manufacturer estimate is labeled and can remain visible as source evidence. It is excluded from numeric filters, medians, ranges, ranking, charting, and calculations.
Continue to ASTM F3340 explained · Read the full sleeping-pad methodology