This G3-C spacesuit was made for and worn by astronaut James McDivitt during training sessions prior to the Gemini 4 mission in June, 1965.
The training suit was identical to the suit worn during the mission, and like that suit, this one was made from high-temperature (HT) nylon (Nomex), permitted freedom of movement, and was equipped with communication and bio-medical transmission equipment.
NASA - Johnson Space Center transferred this suit to the musuem in 1983.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.