Question: are wool socks the warmest?
Answer: The 3 Warmest Socks For Extreme Cold. ... When choosing a pair of the warmest socks for winter, look for insulating materials like acrylic or Merino wool in the fabric makeup. Merino wool is known to be really warm, and since it's finer than other types of wool, it's also more breathable and won't feel itchy on your skin.