Flannel

Flannel is a loosely woven or knitted fabric that has been brushed to raise a soft, slightly fuzzy surface nap. In tailoring, flannel is a worsted wool cloth with a characteristic matte, warm handle — the cloth of choice for autumn and winter suits and trousers.

A grey flannel suit is one of the canonical garments of menswear: versatile, warm, and possessed of a quiet authority that resists every passing trend. It is not modest — it is confident.