The pressure suits were called A7LB, which came in two versions. The Extra-vehicular (EV) version was a new mid-entry suit that allowed greater mobility and easier operations with the lunar rover.

The Apollo model A7LB was the ultimate moonwalking suit. This Extravehicular Mobility Unit (EMU) allowed a crewman to work on the moon for up to seven hours. The suit’s red stripes identified the mission commander.

The suit was constructed by the International Latex Corporation, with the designation A-7LB, and consisted of approximately 26 layers of materials designed to protect the astronaut from the extremes of temperature to be found in the vacuum of space and on the lunar surface.

The space suit used for Apollo project was called A7L / A7LB. The head character 'A' means Apollo project. Second character '7' means model number. Third 'L' means manufacturer. In Apollo project, from earlier A1C to last A7LB, 15 types of space suits were developed.

Two layers of Nomex felt in the sole provided additional thermal insulation from the lunar surface. The lunar overboot was updated to match the new A7LB suit for Apollo 15 through 17.

assembly (PGA) configura tions which support Apollo missions . One configuration is designated as the comand module pilot (CMP) A7LB PGA which provides low-pressure and fire protection in the intravehicu lar (IV) mode and protection from the free-space environment.

Each Apollo astronaut had three custom fitted A7L suits - one for flight, one for training, and one for flight back-up. The Apollo suit weighed 22 kg and its PLSS Portable Life Support System, 26 kg. The A7LB modification was used for Apollo J series lunar landing missions. The A7LB with an additional thermal garment was used for Skylab.

This chapter outlines the features of the advanced model A-7LB space suit (or Omega suit) and discusses the various Apollo missions this model su.

Each Apollo astronaut had three custom fitted A7L suits - one for flight, one for training, and one for flight back-up. The Apollo suit massed 49 lbm (22 kg) and its PLSS, 57lbm (26 kg)*. The A7LB modification was used for Apollo J series lunar landing missions. The A7LB with an additional thermal garment was used for Skylab.

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