page_title: Apollo/Skylab space suit
section_title: ASTP Spacesuit
hierarchical_section_title: Apollo/Skylab space suit / Apollo 15-17, Skylab and ASTP  Spacesuits / ASTP Spacesuit
caption_attribution_description: English: Apollo crew board transfer van to the launch pad prior to liftoff on the ASTP flight. The crew are (from left to right) Deke Slayton, docking module pilot; Vance Brand, command module pilot; and Thomas Stafford, commander.
context_page_description: The Apollo/Skylab space suit is a class of space suits used in Apollo and Skylab missions. The names for both the Apollo and Skylab space suits were Extravehicular Mobility Unit. The Apollo EMUs consisted of a Pressure Suit Assembly aka "suit" and a Portable Life Support System that was more commonly called the "backpack". The A7L was the PSA model used on the Apollo 7 through 14 missions.
  The subsequent Apollo 15-17 lunar missions, Skylab, and Apollo-Soyuz used A7LB pressure suits. Additionally, these pressure suits varied by program usage. For the Skylab EMU, NASA elected to use an umbilical life support system named the Astronaut Life Support Assembly.
context_section_description: For the Apollo-Soyuz Test Project, NASA decided to use the A7LB CMP pressure suit assembly worn on the J-missions with a few changes to save cost and weight since an EVA was not planned during the mission. The changes included a simplified cover layer which was cheaper, lighter and more durable as well as the removal of the pressure relief valve and unused gas connectors. No EVA visor assemblies or EVA gloves were carried on the mission.
  The ASTP A7LB suit was the only Apollo suit to use the NASA "worm" logo, which was introduced in 1975 and used extensively by NASA until 1992.
caption: The ASTP crew, entering the transfer van
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