FIELD PANTS LINER, TERRICLOTH, M-1951, SIZR S/R. This vintage pants liner is marked Regular Small  It is also marked Liner Trousers Artic M-1951 Atlantic Sportswear Mfg. Inc. Q.M.-28810 Dated 27 June 1952 100% Wool Pile, Cotton Back. The outer cloth appears to be OD Olive Drab nylon. They are used with wear and stains in good usable as is pictured condition. The top edge has button holes for attaching to era Military Field pants.