Plugsuit

A Plug Suit is a form-fitting full body suit, similar to a divers' wet suit, which aids is worn by Eva pilots and aides in synchronization with an Evangelion. No two Plug Suits are alike, as each one is custom-made for each pilot (though they apparently have multiple spares of each). A Plug Suit appears bulky at force, but activating a mechanism on the wrist shrinks it to being skin-tight. Plug Suits contain various healthy monitoring devices to monitor the pilot's condition, as well as medical aid such as built-in defibrillators. Each of the Plug Suits is roughly color-coordinated with their corresponding Eva Unit.