they're made from a mix of all the below.

Twaron
Nomex
coated nylon
Carbon Foam
M5 fiber
Kevlar
Proban fr cotton
PYROMEX
Pyrovatex fr cotton
Dale Antiflame
Indura fr cotton
Technora
Teijinconex
Lenzing FR
Carbon X
Kanox
Mazic
Modacrylic
Kermel
PBI

yeah they're as cool as they sound lol