Estimating Quilt EN Ratings
To my knowledge, only Therm-a-Rest and Sierra Designs properly rate the temperature ranges of their quilts using the EN standard. Originally designed for sleeping bags, the standard test assumes that there is a hood involved, which quilts obviously do not have. TaR and SD circumvent this problem using the simplest approach possible: just throw a hood on the thermal mannequin and be done with it. In a previous post on buying a winter quilt, I used data from TaR and SD to put together an equation that could estimate the EN comfort rating of any quilt given the amount of [...]