Kangol Wool 504 Earflap Cap Size XL Great condition! The Wool 504 is the iconic, original Kangol® Cap. First introduced in 1954, the 504 cap gets its name from the block number that it is made on. This classic version incorporates cozy fully-fashioned rib knit earflaps that hugs your ears on the coldest days & fold up when not needed. If you are between sizes, we recommend sizing up. The ear-flaps folded up into the hat will make it fit a little more snug. #kangol #woolhats