This is a Vent Plenum Assembly (VPA) for the Space Suit Assembly Extravehicular Mobility Unit (SSA/EMU) that is the current U.S. spacesuit for performing spacewalks from the International Space Station. The VPA is a component of the Liquid Cooling and Ventilation Garment (LCVG) that circulates cool water and fresh air inside the EMU. The VPA is a flexible system that returns ventilation gases from the arms and legs. This one was used extensively for astronaut training and shows evidence of damage from use.
NASA transferred this object to the museum in 2012
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.