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
Military/Landgirl 1940s 100% Wool Vintage Clothing for Men for
Military long underwear - Gem
40s pre ww2 wool - Gem
Las mejores ofertas en Ropa Vintage Militar/granjera todos los
Vintage 1940s button fly - Gem
40s pre ww2 wool - Gem
1940s Vintage Clothing for Men for sale
Vintage 1940s button fly - Gem
Military Special Ops Long Underwear Layer 1 Silk weig… - Gem