This pressure helmet was made for and worn by astronaut Jim Lovell, Commander of the Apollo 13 mission in April, 1970.
The Apollo pressure helmet was a transparent bubble designed to attach to the spacesuit neck ring, designed by AirLock Inc. as a subcontractor to ILC Industries. It was constructed of a polycarbonate shell with a red anodized aluminum neck ring, a feed port, a vent pad and duct assembly attached to the rear and a valsalva device attached to the inner ring.
There were two configurations used on Apollo suits which were not interchangable, the earlier configuration was anodized blue, with the later configuration being anodized red.
Transferred to the National Air and Space Museum from NASA in 1973.