Gemini – For space program with two-man crew
- In use in the years: 1965 – 1966
- Spaceships: Gemini – For two-man crew.
- Weight: 7 – 15 kg.
G3C suits remained flexible even under pressure. The G4C suit was used for the open space exit (upper body only). Connected to the spaceship by a hose that supplied the astronauts with oxygen. In case of problems, the astronaut would survive up to 30 minutes in it. Later, a comfortable and lightweight G5C suit was made.