The
jeep cap originally the
US Army issued
M1941 wool knit cap (Cap, Wool, Knit, M1941) is generally like a
toboggan cap (or some sources also describe it as a
beanie) with a short,
baseball cap-like
brim attached to it, made mostly from
knitted yarn, originally
wool but now more often
acrylic. Also sometimes referred to as a "skull cap" due to its popularity with
skateboarders (although the term "
skull cap" is also used for a variety of completely different caps), or a "Radar cap" due to the cap being made famous by the character
Radar O'Reilly from the hit US TV
sitcom M*A*S*H.