It is not in the game. If you get it because of whatever reason (as example, GM ignoring the rules again), it would be nice to report it. The armor item itself is just a test object, it's not meant to be used.
ENVIROMENTAL_ARMOR, 10, 1
Could be put in as a fixed graphic, but not a moving one, as FoT had 8-point (direction) models and FO2 had 6-point models.