NASA MMU (Manned Maneuvering Unit) Patch

The MMU emblem has its origins in Shuttle mission STS 41B. This mission served as the test flight of the Manned Maneuvering Unit (MMU) equipment. This emblem is an illustration of that first test and subsequent applications. This insignia was worn on the MMU itself during STS 41B. 

Size 4" approx.