This pressure helmet was used by various astronauts during training exercises prior to the Apollo missions of the late 1960s.
It was constructed by ILC Industries of a transparent polycarbonate shell designed to attach to the spacesuit's blue neck ring with a blue anodized aluminum neck ring disconnect. A beta cloth and anodized aluminium vent pad was attached to the rear with a valsalva device attached to the inner ring disconnect and a feed port to the left of the astronaut's head.
Transferred to the National Air and Space Museum from NASA in 1985
This object is on display in Human Spaceflight at the Steven F. Udvar-Hazy Center in Chantilly, VA.