Coif: ca. 1600-1625, linen, embroidered with linen thread and edged with bobbin lace. "Like a man's nightcap, a woman's coif was informal headwear. It would have been worn by itself indoors, or underneath a hat in public. In Western Europe it was customary for both men and women to cover their heads outdoors until the 1960s. A hat was an essential part of respectable dress and, from a health perspective, head coverings were considered necessary to protect against chills and disease."