Re: Flight suit/coveralls for ghillie build?
I used to help out with a friend selling his own brand (VAS Racing) of Nomex racing suits for Race Car Drivers.
He had two sets of designs; those for drivers, and those for crew.
Drivers, by the nature of their mission, perform very few activities that require an extended range of motion, and their fire suits are made in one piece.
Crew are all over the place, moving fast and performing broad motions, and their fire suits are made in two pieces, an upper, and a lower.
A ghillie requires two pieces, IMHO. One piece suits are too restrictive.
The Nomex, however makes good sense. the typical cotton/burlap ghillie is a dangerous firetrap. Not only the foundation garment, but the foliage would benefit from being made of Nomex. Not cheap, but how much does months in a burn ward cost?
Nomex is not fireproof, but it will not melt to add complexity to injuries (like Nylon and most other synthetics), and it will not feed combustion. It chars, slowly. It's primary advantage is to remain intact, shielding and insulating the wearer from direct flame.
Their ratings are based on the time they will withstand direct flame, preventing the degree of heat passage that begins producing burn injury; and the higher the rating, the more layers of Nomex.
To be truly effective, even the stitching must be composed of Nomex thread.
I no longer have access to such materials, and do not have a ghillie because of that lack. I flatly refuse to construct a ghillie that is not made of 100% Nomex.
My friend's suits began at $400 (Club/NASCAR Racing), to about $1K (Indy/F1 Racing), and went up to several $K (Land Speed Record attempts). Their prices undersold big name brands (Momo, Alpine Star, which he also sold.) by about 40%. He also produces custom fit replica vintage racings suits made of Nomex, where the originals provided zero fire protection.
The stated prices are/were just for what would be a one-piece ghillie foundation garment, two piece garments cost more to make.
What a racer pays for is protection time before their vehicle can come to rest and help can reach them. If you crash and burn doing 220MPH that's one duration (up to several minutes before deceleration to zero, extinguishment, and extrication, and not all race cars are as safe as NASCAR racers); if you're doing Mach1+, it's considerably longer. No suit will protect indefinitely.
Greg