The Macpac Merino Blend Hiking Sock is a technical hiking sock that has been designed to have all the temperature regulation, breathability and odour resistance you expect from merino wool. Its full cushioning and smooth toe seam increases warmth and comfort, while an elasticated foot arch provides a snug fit also helping to prevent the sock riding down in your boots. The added nylon and elastane increases fabric strength and stretch, making this warm sock ideal for your most intrepid journeys.