The Sokol space suit is a type of Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

n space suit

Space suit

A space suit is a garment worn to keep an astronaut alive in the harsh environment of outer space. Space suits are often worn inside spacecraft as a safety precaution in case of loss of cabin pressure, and are necessary for extra-vehicular activity , work done outside spacecraft...

, worn by all who fly on the Soyuz spacecraft

Soyuz spacecraft

Soyuz , Union) is a series of spacecraft initially designed for the Soviet space programme by the Korolyov Design Bureau in the 1960s, and still in service today...

. It was introduced in 1973 and is still used . The Sokol is described by its makers as a rescue suit, and it is not capable of being used outside the spacecraft in a spacewalk or extra-vehicular activity

Extra-vehicular activity

Extra-vehicular activity is work done by an astronaut away from the Earth, and outside of a spacecraft. The term most commonly applies to an EVA made outside a craft orbiting Earth , but also applies to an EVA made on the surface of the Moon...

. Instead, its purpose is to keep the wearer alive in the event of an accidental depressurisation of the spacecraft. In this respect it is similar to the ACES suit worn aboard NASA

NASA

The National Aeronautics and Space Administration is the agency of the United States government that is responsible for the nation's civilian space program and for aeronautics and aerospace research...

's Space Shuttle

Space Shuttle

The Space Shuttle was a manned orbital rocket and spacecraft system operated by NASA on 135 missions from 1981 to 2011. The system combined rocket launch, orbital spacecraft, and re-entry spaceplane with modular add-ons...

 during launch and landing.
The current version of the suit is the Sokol-KV2, manufactured by NPP Zvezda

NPP Zvezda

Research & Development Production Enterprise Zvezda, or R&D PE Zvezda is a Russian manufacturer of life-support systems for high-altitude flight and human spaceflight. Its products include space suits, ejector seats, aircraft escape slides, lifejackets and fire extinguishers...

 (НПП Звезда).