The practice of donning a head covering before sleep, specifically a soft cloth cap, was a widespread custom among men for centuries. This headwear served multiple purposes, extending beyond mere comfort. These caps, often crafted from linen or cotton, were a common feature of nightly attire.
Several factors contributed to the prevalence of this custom. Maintaining warmth was a primary consideration, especially in poorly heated homes. Protecting hairstyles, particularly those requiring time and effort to maintain, was another significant benefit. Furthermore, hygiene played a role, as the head covering helped to keep bedding cleaner by absorbing oils and preventing the spread of head lice. The perceived health benefits, tied to preventing illness caused by nocturnal drafts or “night air,” also added to its popularity.