This sock is designed for use with boots in the rigorous conditions of mines or smelters. Its pure wool terry-knit inner layer provides added blister protection, and aids moisture removal, without increasing foot temperature.
The lower leg of the sock is knitted tighter to follow the shape of a normal leg and ankle, decreasing the possibility of its slipping into the boot without having to use elastane which would decrease moist air flow up the leg. A nylon outer layer provides durability, and protects the wool inner layer.
This sock has a 1 x 1 rib top with elastane in the welt only. This construction allows greater sideways stretch and is technically a better construction than an in turned welt top. The sock can be folded over the top of the boot for comfort and moisture removal.