This suit was manufactured by Litton Industries, which made a series of "hard" suits during the early 1960s. Originally called the RX-1 of which two were made - this one was modified and became the RX-2.
These experimental suits were designed to be used during extended lunar extra-vehicular activities, and could maintain an almost perfectly constant volume while enabling a full range of body motions. They could operate at higher pressure, thus reducing the time-consuming oxygen pre-breathing period before extra vehicular activities.
Transferred to the National Air and Space Museum from NASA in 1972.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.