doublet

noun
1. a close-fitting outer garment, with or without sleeves and sometimes having a short skirt, worn by men in the Renaissance.
2. an undergarment, quilted and reinforced with mail, worn beneath armor.

[Origin: 1300-50; Middle English, from Old French double]

HOWARD’S USAGE:

His boots were of Kordovan leather, his hose and doublet of plain, dark silk, tarnished with the wear of the camps and the stains of armor rust.

[from “A Witch Shall Be Born”]