Has anyone used this stuff yet? seems increadible. (google aerogel) You might click on top of google page on IMAGES first. Shows some clothing and other uses of this stuff.
I don't think there is any mass produced clothing out there right now. I know the Canadian Ski Team has invested in some clothing and some expeditions to the South Pole, but I do not think it's out to the public yet.
Has some great possibilities though, clothing, ice shanty insulation, etc