1945, either L-12 or immediat forerunner, OB-green nylon flight suit style with two upper patch pockets, full length zipper down front, inflatable bladders on each thigh and calf, and on both sides of abdomen, all attached to suit by interlacing tape and connected by cloth covered rubber hoses. Laces along each leg and side of body. Differs from L-12 only in that it lacks outer covering over pneumatic lever system. Nylon has slight red tinge.