1. Pilots wore a pressure suit , which could be pressurized with nitrogen gas. 2. It was designed by NASA based on the X-15 high-altitude pressure suit . 3. Bikle flew the record flights without cabin pressurization or a pressure suit . 4. Partial-pressure suits work by providing mechanical counter-pressure to assist breathing at altitude. 5. ,Orbital Outfitters was reportedly designing pressure suits for XCOR use .. 6. "He was a civilian, and we didn't have a pressure suit for him," 7. Thomas and his colleagues donned protective pressure suits for Friday's operation. 8. Finally, it could at last carry three cosmonauts with pressure suits . 9. In cabinet laboratories, all work must be done within a positive pressure suit . 10. Both pilots considered further records attempts and Dorati also experimented with pressure suits .
