Trait: Pressure Suit
This character wears a pressure suit.
A pressure suit is a protective suit worn by high-altitude pilots who may fly at altitudes where the air pressure is too low for an unprotected person to survive, even breathing pure oxygen at positive pressure. Such suits may be either full-pressure (i.e. a space suit) or partial-pressure (as used by air crew). Partial-pressure suits work by providing mechanical counter-pressure to assist breathing at altitude.
Diving suits that protect the wearer from excessively high pressure are called atmospheric diving suits. Pressure suits in general are examples of environmental suits.