Starting to write the R values on our sleeping pads now that we have apples-to-apples ASTM numbers available. Some of the revised ASTM values are a significant drop from original claimed R values. #camping#backpacking
@Verso R value in this case is insulating rating (0-1 = nada, 1-2 = summer only, 4+ now we’re getting somewhere). Manufacturers for years had no common standard set for this so some were just sort of making it up. ASTM institute set industry standards just last year so after a century of outdoor gear sales we finally have some way to truly know how warm a sleeping pad will keep you.
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