Doublet

A doublet (/ˈdʌblɪt/; derived from the Ital. giubbetta) is a man´s snug-fitting jacket that is shaped and fitted to the man´s body. The garment was worn in Spain, and spread to the rest of Western Europe, from the late Middle Ages up to the mid-17th century. The doublet was hip length or waist length and worn over the shirt or drawers. Until the end of the 15th century, the doublet was usually worn under another layer of clothing such as a gown, mantle, overtunic or jerkin when in public.

Originally it was a mere stitched and quilted lining ("doubling"), worn under a hauberk or cuirass to prevent bruising and chafing. Doublets were sometimes opened to the waistline in a deep V. The edges might be left free or laced across the shirt front. If there was space left it might be filled with a stomacher. By the 1520s, the edges of the doublet more frequently met at the center front. Then, like many other originally practical items in the history of men´s wear, from the late 15th century onward it became elaborated enough to be seen on its own.