Duffle Coats

Originally worn by the British Royal Navy in WWI. Referred to as a "convoy coat". The word Duffle originally referred to a Heavy Woollen Cloth closely woven for warmth and manufactured in the Belgian Town of Duffel.

Gloverall claims to have created the first duffle coat.

The Classic Gloverall Coat. On my to buy list. 

Tommy Hilfiger also makes a beautiful duffle coat.