I was wondering the same thing - Friction between material layers with movement + an very low loss insulation layer would qualify as "self heating"...kinda. I'

I was wondering the same thing - Friction between material layers with movement + an very low loss insulation layer would qualify as "self heating"...kinda. I'm more interested in the SolarCore AeroGel they created, and its actual insulation properties when compared to pure "Legacy Aerogel" - I'd imagine incorporating it into a fabric like substance would significantly decrease its insulating ability