The Wool 504 is the iconic, original Kangol pocket cap. First introduced in 1954, the 504 cap gets its name from the block number that it is made on. The 100% seamless wool cap is the ultimate cap for comfort & style. 100% Wool Elastic Interior Comfort Fit Band Unlined Dobbs Hats, Kangol Caps, Kangol Hat, Bailey Hats, Kangol Hats, Ivy Cap, Flat Caps, Wool Caps, Black Camel