The "jeep cap" was first issued by the United States Army in February 1942 during World War II; the purpose of the jeep cap was to be worn underneath the heavy combat helmets to offer soldiers both extra padding and warmth. The jeep cap was originally knitted close to the head, with a six-stitch "starfish pattern" on top (supposedly to support the webbing suspension inside the helmets), with a cuff coming out like a V from the top center of the brim and around the rest of the cap, which soldiers could pull down over their ears for even more warmth. The cap was issued in four different sizes – small, medium, large, and extra large – and made of olive drab wool; perfect examples of these original jeep caps can be found being worn by Staff Sergeant Kinchloe from the sitcom Hogan's Heroes (he wore his with the brim folded up), and Radar O'Reilly from "M*A*S*H" (who was seldom seen without one). Another example of characters depicted wearing the cap is the WW2 movie Stalag 17.