Space suits

A space suit is a garment worn to keep it's occupants alive in the harsh environment of outer space, vacuum and temperature extremes. Space suits are necessary for extra-vehicular activity (EVA), work done outside spacecraft.

Union space suits augment the basic pressure garment with a complex system of equipment and environmental systems designed to keep the wearer comfortable, and to minimize the effort required to bend the limbs, resisting a soft pressure garment's natural tendency to stiffen against the vacuum. A self-contained supply of air and environmental control system is frequently employed to allow complete freedom of movement, independent of the spacecraft. They also include some form of propulsion and shielding.

The first practical Battle Suits developed from space suits to which were added Powered Exoskeletons, better shields and both suit mounted weapons and holsters for hand held weapons.

Initially fighter pilots used simple space suits, quickly transitioning to early battle suit models after the first casualties. For around five hundred years the lighter models of the basic battle suits also severed as fighter pilot suit, at which time fighter pilots started wearing specially designed model of battle suit while piloting fighters.