&gt; Michael Markesbery, CEO and co-founder of Oros, tells Tech in Asia the jackets utilize Aerogel, a material used by NASA in their spacesuits. It helps with insulation and allows the apparel to be warm, thin, and lightweight. Aerogel is considered to be the most effective thermal conductor on the planet as it is 90 percent air. Oro’s jackets are, on average, only 3mm thick but give the same warmth as a 40mm Goose Down equivalent.<p>I don&#x27;t think you know what &quot;thermal conductor&quot; means.  I also love the claim that the gloves are self-heating without any need for a battery.  Do little fires get started in them that you have to feed with wood pellets?  Or do they just use those rust-heat-pouches?