Heavy Alpaca Sock - GreyThe cream of the crop when it comes to a heavy wool sock. For every trail, hike, or slope, the Heavy Sock made from alpaca wool is your go to for comfort, warmth and temperature regulation. Our socks combine softness, durability, moisture wicking material, and optimal temperature control, keeping your feet extremely warm. With a special open weave knit located on the top of the sock, you can go further in your Heavy Alpaca Socks and not sweat.