What does moisture management mean?

Simply put: to temporarily absorb excess moisture and then release it back into space when conditions change.

Simply put: to temporarily absorb excess moisture and then release it back into space when conditions change. Moisture in a cavity is inevitable, even an airtight one, given the simple properties of condensation and vapor drive. Taking its presence as a given, moisture needs an escape path. While in the cavity it can either be managed or degrade what it comes in contact with. If it is the side of your van, then rust enters the equation. If it is a sub-par material, then reduced efficacy and mold are both an issue. If it is wool, then you have a wildly dynamic fiber working in your favor. It will take moisture in when the ambient air exceeds 65% relative humidity. When those levels drop below the threshold, moisture is dissolved adding to temperature control and indoor air quality.