Yastreb

Design and development of the suit took place in 1966 by the Zvezda Company with input from Alexei Leonov.

The Berkut suit that Leonov had used on the Voskhod 2 space walk had ballooned at the joints making movement very difficult.

The backpack containing life support was mounted in a metal box that could be attached to the chest or to the leg to ease access through the small Soyuz hatch.

The suit's mobility performance was limited, so during the planned Soviet Moon landing the movements of the cosmonauts would be restricted.

Name: Yastreb Spacesuit Manufacturer: NPP Zvezda Missions: Soyuz 4 and Soyuz 5[1] Function: Orbital Extra-vehicular activity (EVA) Operating Pressure: 400 hPa (5.8 psi)[1] Suit Weight: 20 kg (44 lb)[1] Backpack Weight: 21 kg (46 lb)[1] Total Weight: 41 kg (90 lb) Primary Life Support: 2.5 hours (150 minutes)[1]