One of the signs accompanying the CWG. It reads
Constant Wear Garment
A one-piece constant wear garment, similar to long underwear with feet, was
worn by Apollo astronauts throughout every flight. The garment is made of a
porous knit cotton. Notice the small pockets for
holding dosimeters to check for radiation exposure. The biomedical
harness attaches to the reinforced
rectangular panel. Sensor wires from the harness are supported by fabric
loops and enter the suit through buttonhole-like slits.
The garment on display was worn by Ohio astronaut Jim Lovell, who flew on the
Apollo 8 and Apollo 13 missions.
Based on the serial number, I would guess
that this garment was used on Apollo 13 (the serial number is 1131, while a CWG worn
by Frank Borman on Apollo 8 has a serial number of 1116).