A word of caution though. Nomex is flame retardant but it is not a good insulator against heat. In other words, although it doesn't burn, heat will pass through it. For that reason we were ordered to wear another layer of non-melting clothing underneath, preferably cotton, as per our military long underwear. Racing drivers' nomex suits are multi-layered for this reason. Not a problem in winter, but the temptation is to go naked underneath in hot weather.
Whatever you do, don't wear nylon as it melts into your skin.
[This message has been edited by ShyTorque (edited 09 January 2001).]