Apollo/Skylab A7L spacesuit.

The A7L Apollo & Skylab spacesuit is the primary pressure suit worn by NASA astronauts for Project Apollo, the three manned Skylab flights, and the Apollo-Soyuz Test Project between 1968 and the termination of the Apollo program in 1975. The "A7L" designation is used by NASA as the seventh Apollo spacesuit designed and built by ILC Dover (a Playtex division when the suit was designed). The A7L is a design evolution of ILC's initial design A5L and the A6L, which introduced the integrated thermal and micrometeroid cover layer. After the deadly Apollo 1 fire, the suit was upgraded to be fire-resistant and given the designation A7L.

For the last three Apollo lunar flights Apollos 15, 16, and 17, the CDR and LMP started wearing a new moonwalking suit designed for longer duration J-series missions, in which three EVAs would be conducted and the lunar rover (LRV) would be used for the first time. Originally developed by ILC-Dover as the "A9L," but given the designation "A7LB" by NASA, the new suit incorporated two new joints at the neck and waist. The waist joint was added to allow the astronaut to sit on the LRV and the neck joint was to provide additional visibility while driving the LRV. Because of the waist joint, the six life-support connectors were rearranged from the parallel pattern to a set of two "triangles," and the up-and-down zipper was relocated to the left front side of the suit, going around the back, and terminating on the right shoulder.

In addition, the EVA backpacks were modified to carry more oxygen, lithium hydroxide (LiOH), more power, and cooling water for the longer EVAs. To facilitate these longer EVAs, small energy bars were carried in special pouches beneath the interior of the suit helmet ring, and the astronauts wore collar-like drinking water bags beneath the outer suit.

Because the J-series CSMs incorporated the Scientific Instrument Module (SIM) Bay, which used special film cameras similar to those used on Air Force spy satellites, and required a "deep space" EVA for retrieval, the CMP for each of the three J-series missions wore a five-connector A7LB based H-series A7L suits, with the liquid cooling connections eliminated as the CMP would be attached to a life-support umbilical (like that used on Gemini EVAs) and only an "oxygen purge system" (OPS) would be used, along with a "red apple" lanyard, for emergency backup in the case of the failure of the umbilical. The CMP wore the commander's red-striped EVA visor assembly, while the LMP, who performed a "stand-up EVA" (to prevent the umbilical from getting "fouled up" and to store the film into the CSM) in the spacecraft hatch and connected to his normal life-support connections, wore the plain white EVA visor assembly.