This is the left glove for a United States Navy Mark IV pressure suit like the ones that Navy pilots used in the 1950s and 1960s. B. F. Goodrich manufactured the suit and supplied copies to NASA when the space agency was preparing to launch humans into space. NASA used modified Mark IVs as spacesuits for the first Mercury astronauts. It is unclear whether NASA performed tests on this particular suit or used it only for evaluation. We do not know if the suit came with its own helmet, or if NASA used other helmets interchangeably with this suit.
NASA transferred the suit to the museum after there was no longer a use for the suit in the program.