Rare WWII Army Air Forces WASP / Womens Air Service Pilot's Blue Flight Cap. Blue twill body with tan stitched borders. Has a fold down neck flap that is the same blue twill in the outside but od wool on inside for warmth. Marked a size 22. Made by Knox. There is no name on it but there are some numbers under the brim but hard to make out. This one has been worn but is still in great shape. Couple of spots around cap that not sure if they will come out, but we aren't going to mess with it to find out. Super tough piece of WWII women's headgear to find.