Assembly, Bio-Harness, Aldrin, Apollo 11


Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Collection Item Summary:

This Apollo Bio-Harness was worn by astronaut Edwin "Buzz" Aldrin during his Apollo 11 mission in July 1969.

The Apollo Bio-Harness Assembly was worn under either the intra-vehicular (IV) or extra-vehicular (EV) pressure suit. It consisted of a cotton duck belt with teflon-coated beta cloth pockets into which the electrocardiograph signal conditioner, the impedance pneumograph signal conditioner, and a DC-DC converter were inserted. These instruments monitored the physiological functions of the astronaut. The belt was fitted with snap fastners which attached the assembly to either the constant wear garment or the liquid cooling garment.

NASA transferred this object to the Museum in 1970.

Collection Item Long Description:

Data Source

National Air and Space Museum

Restrictions & Rights

Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum



Credit Line

Transferred from the National Aeronautics and Space Administration


  • Pouch: Beta Cloth, Polyester, Resin, Ink
  • Electrical leads: Anodized Aluminium, Steel, Gold Plating, Plastic
  • Interior: Coated Electrical Wires


Overall: 10 1/2 in. x 8 in. x 11/16 in. (26.7 x 20.3 x 1.7cm)

Country of Origin

United States of America



Inventory Number