MATERIAL : Water Resistant Cloth 80/3 Ply Combed Cotton Twill
LINING : Alpaca and Wool Pile
COLLAR : 1/2 Inch Shearling Sheep Mouton
MAIN FRONT FASTENER : Mil Specs Brass
BUTTON : Mil Specs Urea
SNAP BUTTON : U.S. Government Department of Defense Specs.
LABEL : Roughwear Clothing Co.
The Type B-10 was standardized by the USAAF on July22nd 1943, being the first cotton f lying jacket adopted by the them, as a replacement for the leather f lying jackets. The lining material was an alpaca-and-wool blend, which was less bulky, lighter and warmer than sheepskin.