Such caps were worn by sailors in the Tudor period, and were commonly dyed blue or brown.
[3] Stuffed mittens (also known in Newfoundland and Labrador, where they are traditionally made, as "thrummed mittens") are thrummed with tufts of fleece to create a warm, fluffy interior which gradually felts with use.
According to Hansen, the technique was largely unknown at the time, being limited to Newfoundland and Labrador and a single family in Maine.
[5] Historically, sailors created mats by pulling thrums through a stiff woven base of burlap or rope.
The writer William Winthrop Kent has conjectured that these mats were a precursor to the technique of rug hooking.