Environmental suit

• Outfit designed to allow survival and protection in vacuum

Romulan Star Navy

• Late 24th century
  • Orange-amber in color (TTN Novel: The Red King)

Starfleet

• Officially named Starfleet Extravehicular Work Garment, or SEWG (DS9 Novel: Avatar, Book One; TNG Novel: A Time to Sow)

Class A

• Rated for hard vacuum, spacewalk conditions

Mid-23rd century

• Silver suit, tall domed helmet (TOS: "The Tholian Web")
• Decommissioned by 2280 (SCE Short Story: "Foundations, Book Three")

Class B

• Rated for partial atmosphere conditions (S31 Novel: Abyss)

Class C

• Rated for full atmosphere, otherwise hazardous environmental conditions

2264 -

• First implementation of class C SEWG (SCE Short Story: "Foundations, Book One")
• Lightweight reflective full-body protective garment (TOS: "The Naked Time")
  • Bright-orange in color (TOS: "The Naked Time")
  • Nicknamed "space bags" due to appearance, discomfort (SCE Short Story: "Foundations, Book One")