A-A-55311 1997 Edition, July 1, 1997
SHIRT, LIQUID COOLING, LONG SLEEVE
This commercial item description covers the requirements for a liquid cooling shirt intended to be worn by aircrew and other defense personnel as part of a microclimate cooling system. The shirt cools the user when a liquid coolant at a temperature lower than skin temperature is pumped through it. The garment is worn as a shirt under outer protective clothing, directly against the skin.