>>1351792That graph uses experimentally derived data. A container of water was wrapped in dry wool insulation, wool insulation that had been soaked in water and then drained, and a control was done with no insulation. Then the drop in temperature was measured over 30 minutes. The wet wool performed worse than no insulation at all. This probably happened because of evaporative cooling. Your soaked loden jacket will also cool you through evaporative cooling. The fact that your wet jacket is the same temperature as your body says nothing about it's evaporative cooling effect and it also has nothing at all to do with keeping your body heat inside. You need to learn how thermodynamics work.
>>1351824Oiled linen was used for centuries as well. Don't see many ultralight backpacking tents made out of the stuff nowadays. Loden is for fashion, not for practicality.
Here's the results of the same experiment, but done with fleece. Nearly identical results. Thing is, that fleece won't be wet for long, unlike your loden larpjacket.
