Rothco M-65 Field Jacket LinerDesigned to be worn as a base layer to the M 65 Field Jackets, Rothco's M 65 Field Jacket Liner can also be worn as a stand alone jacket. Military Jacket Liner Fits Inside M 65 Field Jackets Quilted Nylon Outer Provides Comfort And Warmth To Classic US Military Field Jackets Liner Features Polyester Filling For Added Warmth Buttons Into All U. S Type Field Jackets Jacket Liner Can Also Be Worn On Its Own