According to the company's press statement, the new suits are an evolution of the Intravehicular Activity (IVA) suit currently ... the first EVA where four astronauts were in space simultaneously ...

In fact, NASA are down to just four flight-ready EVA suits ... for the Space Shuttle program in 1974 and have vastly overworked their original 15-year-life design. Suit No. 1 was only used ...