G-suit

thumb|MSF830 anti-g suit trousers and cummerbund fitted over a flying suit

A g-suit, or 'anti-g suit', is a flight suit worn by aviators and astronauts who are subject to high levels of acceleration force (g). It is designed to prevent a black-out and g-LOC (g-induced loss of consciousness) caused by the blood pooling in the lower part of the body when under acceleration, thus depriving the brain of blood. Black-out and g-LOC have caused a number of fatal aircraft accidents.