Long underwear, or also called long johns or thermal underwear, is a style of two-piece underwear with long legs and long sleeves that is normally worn during cold weather.
The material was a little thinner than I expected, but overall I'm happy with it, especially with the compact way the compartments are organized. I'm going to be keeping this in a backpack so the weight of the material isn't so much of an issue, but I wouldn't recommend this as just a satchel or standalone belt bag.
I had to take out some stitching-it was taken in by the previous owner in the back with two darts--in two places on the back and patch some moth holes, but the wool field jacket is in good shape considering its age.