Fuzzy Logic

It goes by many names—marled wool, ragg wool, etc.—and it usually shows up around this time in shades of salt and pepper greys. But this year of year, the two-tone knits seem to be even more widespread and in a range of colors, to boot. The durable and warm sweaters, hats, socks and scarves add some rugged charm and texture to whatever you're wearing, just make sure to sport it one piece at a time.

• Sock monkeys made from red-heeled work socks emerged in the US in the early in 1930s.