Heavy weight, Cowichan style pullover sweater with front and back Buffalo design weave. 80/20 wool/nylon. Cowichan knitting is a form of knitting developed by the Cowichan people of southeastern Vancouver Island, British Columbia after sheep were introduced in the 1850's. Intricate patterns are a hallmark of the Cowichan sweater, typically with heavy natural-coloured yarn, producing a warm bulky outer garment. Imported.