It turns out one of the best ways to keep your feet warm in cold weather is to wrap them in mammal hair. And when it comes to mammal hair socks, they don't get much better than the Defeet Woolie Boolie 2 cycling socks. They're thick for extra warmth, they insulate even when wet or sweaty, and they're not even itchy. When the days turn chilly, these are some of the best socks you can get.
High grade merino wool fibers are soft and comfortable to wear
Padded terry loop construction to support and comfort your feet while riding
Arch compression helps to support your foot to decrease fatigue
Wool keeps your foot warm and insulates even when wet