The G-suit is an inflatable lower-body compress worn by jet fighter pilots over their flight suit. It was found that, especially with the increase in speed and power of the jet engine, high-G maneuvers could result in a pilot's blood pooling in their lower extremeties, starving the pilot's brain of oxygen and causing them to blackout. The suit operates by squeezing the legs and lower abdomen of the pilot during high-G maneuvers, forcing their blood back into the upper body, enabling them to better resist blacking out from G-forces.
Please only apply this tag if the G-suit itself is actually visible, which by necessity would mean that the pilots' legs are visible.
