WHI is a medium-thick trekking sock containing merino wool, which is a unique natural material and provides excellent thermal insulation and moisture-removing properties.  The sock is made of a two-layer, smooth knit. The toe and Achilles‘ heel section are made of a two-layer reinforced plush, offering high mechanical resistance and protection against corns and calluses. Wool has excellent antibacterial properties and reduces unpleasant odors.