A jacket with overlapping front flaps and two columns of buttons. The right column of buttons serve to close the jacket whereas the left column of buttons are cosmetic.
Six-on-one buttoning is the most popular (six total buttons, one button on the bottom to fasten the flaps); six-on-two buttoning is also common (six total buttons, two buttons to fasten the flaps).
Almost always the double-breasted jacket has peaked lapels and a double vent or ventless (single vent does not fit the jacket’s style).
A double-breasted jacket must always be buttoned due to the wide front flaps.
The double-breasted jacket was most popular between the 1930’s and 1950’s; though it is still regarded as a classic design.