Russian Orlan-DM spacesuit with its life support system and entry hatch.
https://diqn32j8nouaz.cloudfront.net...onaut_suit.jpg
More:
https://en.wikipedia.org/wiki/Orlan_space_suit
Previously:
https://www.homemadetools.net/forum/...236#post150073
https://www.homemadetools.net/forum/...193#post115877
https://www.homemadetools.net/forum/...646#post147627
