The jerkin could be either very simple for everyday wear, or much fancier, especially in Scotland, where there was a jerkin for every occasion.
Jerkins were worn closed at the neck and hanging open over the peascod-bellied fashion of doublet. At the turn of the 17th century, the fashion was to wear the jerkin buttoned at the waist and open above to reflect the fashionable narrow-waisted silhouette. By the mid-17th century, jerkins were high-waisted and long-skirted like doublets of the period
The jerkins from the Second World War had bakelite buttons instead of the brass or brown leather of the originals, and were each unique in that they were finished around the bottom edges with offcuts in a bid to eliminate waste. (It has been suggested that many of the WWII jerkins were made up from leather left over from the Irvin flying jackets also in production in the UK - however, the flying jackets were made of sheepskin so this may not be the case). Jerkins remained warm and comfortable garments to wear whilst fighting, working or driving, and came to characterize the British forces as a preferred alternative to the heavy greatcoats that other armies persisted with.
A practical garment known as the Battle Jerkin was developed in 1942 by Colonel Rivers-MacPherson of the British Army; a modification of the English hunting vest, it was developed into a garment made of leather (canvas versions were also created) with multiple pockets, intended to replace the conventional web gear then in use. It was issued to assault troops for the Normandy landings and was used widely by commando personnel in 1944–45.
During the post war period, a much less distinctive PVC version was introduced to the forces. WD surplus leather jerkins flooded the UK during the 1950s and 1960s and were a common sight on manual workmen across the country. Wartime vintage leather jerkins are now collector's items, and at least one UK firm has produced a facsimile. The Belgian Army also produced vinyl jerkins in the postwar era.