If you are prone to getting cold feet in the winter, you’ll appreciate the warmth of a sock made with premium wool. If you venture outdoors, the extra warmth will allow you to be comfortable even while hiking in the snow.

The warmest wools are: qiviut (musk ox down), yak wool and bison wool.

Merino and alpaca wool are also very warm fibers. See my previous article for a closer examination of these wools.

Listed below are the warmest socks I’ve tested:

Warmest Boot/Hiking Socks

90% Bison Wool Boot Socks by Buffalo Wool Company — highest percentage of bison wool in a boot sock — $54

Wayfarer Sock by Khunu — 56% yak wool, 34.5% nylon, 9.5% Elastane — £22 ($28 USD)

78% Alpaca Socks by Williamston Alpaca — 78% Alpaca, 20% Nylon, 2% Lycra — made in the USA — $22

Warmest Crew Socks