This A7-L spacesuit was worn by Charles Conrad, Mission Commander of the Apollo 12 mission in November, 1969. Apollo 12 was the mission in which the second lunar landing took place.
The Apollo spacesuits were designed to provide a life sustaining environment for the astronaut during periods of extra vehicular activity or during unpressurized spacecraft operation. They permitted maximum mobility and were designed to be worn with relative comfort for up to 115 hours in conjunction with the liquid cooling garment. If necessary, they were also capable of being worn for 14 days in an unpressurized mode.
The spacesuit was made by ILC Industries, Inc. with the designation A-7L and was constructed in the Extra-vehicular or EV configuration. It was transferred to the National Air and Space Museum from NASA in 1970.