U. S. Air Corps Life Preserver. Material: rubber, textile. Size: 11 1/2" W. x 27 1/2" L. (uninflated). Description: gold and black U.S. Air Corp & Navy life preserver, military equipment description stamped in black: "Vest Life Preserver. Type B - Specification Contract - W-535-AC-29299 (0376) United States Rubber Company property Air Force, U.S. Army."