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
Military Special Ops Long Underwear Layer 1 Silk weig… - Gem
ww2 underwear, 公認海外通販サイト
Vintage 1940s button fly - Gem
Vintage 1940s ww2 military - Gem
100% Wool Vintage Clothing for Men for sale
Military/Landgirl 1940s 100% Wool Vintage Clothing for Men for
VINTAGE HERREN JAPANISCH Gewebte Seide Lange Kimono & Haori Jacke
Military long underwear - Gem
40s Vintage WW2 Military Issue Wool Long Underwear LaceUp Button
Vintage 1940s ww2 military - Gem
Vintage 1940s ww2 military - Gem