Here's a wool (or wool blend) long underwear set from the 1940s. These are US military issue. The top is long sleeve and pullover. We found these in
Wool Long Underwear Vintage
Military Special Ops Long Underwear Layer 1 Silk weig… - Gem
40s pre ww2 wool - Gem
100% Wool Vintage Clothing for Men for sale
Did early settlers of the Wild West really wear big heavy coats and long sleeves in broad daylight all the time? - Quora
VINTAGE Military issue Long Johns w/ Brace Tapes. button front and adjustable. Olive Green - Fogey Unlimited
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40s pre ww2 wool - Gem
100% Wool Vintage Clothing for Men for sale
40s pre ww2 wool - Gem
100% Wool Vintage Clothing for Men for sale
Here's a wool (or wool blend) long underwear set from the 1940s. These are US military issue. The top is long sleeve and pullover. We found these in
40s Vintage WW2 Military Issue Wool Long Underwear LaceUp Button Fly Long Johns