

The suits have a completely rigid metal reinforced torso with flexible arms, and are donned by entering through a hatch in the suit's backpack life-support system, allowing one to be suited up in as little as five minutes.
The Orlan M is the fourth iteration of the Orlan suit, with the Orlan-D first being used on a spacewalk in 1977 on the Salyut 6 Soviet Space Station; the Orlan-DM from 1985-88 on Salyut-7 and MIR, the Orlan-DMA from 1988-97 on MIR, the Orlan-M from 1997-2009 on MIR and ISS, the Orlan-MK on ISS from 2009-2017, and the Orlan-MKS on ISS from 2017 to the present day.