Men’s Ba-tsu 1990s reversible navy MA-1 bomber jacket with back pocket MReversible nylon bomber jacket by japanese label mens ba tsu (1990s). A fairly faithful reproduction of the MA 1 style bomber, it is made in a sheeny navy nylon, and has a zipped front, angled welt pockets at the waist with a small zipped pocket on the sleeve, and dark navy ribbing at the neck, cuffs, and hem. A striking and unusual detail has been added to the back, with two additional welt pockets (opening into the same pocket bag) positioned in a