This knitted fabric, in wool or cotton, appeared in the middle ages on the Channel Island of the same name. The quality of a jersey garment increases with the finesse of its knit.
Raglan
The term denotes a type of sleeve that starts at the collar and joins the underarm. Wider than a conventional sleeve, it was invented by Lord Raglan, a British officer who lost his arm during the battle of Waterloo and wanted to put his coat on without constraint. The chic man in a hurry has him to thank.