Salvage & Sawdust Co. on Instagram: "The B3 jacket, or “Bomber Type 3,” was developed for high-altitude US bomber crews during World War II to provide protection from extreme cold. Standardized in 1934, it features a sheepskin exterior for durability and a thick shearling wool lining for superior insulation, a design inspired by the earlier British ‘Irvin’ flying jacket. This is an 1960’s Original US Airforce B-3 Heavy Leather Shearling Flight Jacket, perfect for the winter weather! . . . . #b3j