The Hiking Merino Medium sock is good to wear in hiking boots and on slightly cooler days. The sock is an insulating leisurewear sock made from soft merino wool as the main material. Hiking Medium comes with a Y heel and is anatomically designed for left and right feet, with comfortable knit on the calf and ankle section, so that it fits snugly around the foot and minimises the risk of blisters. Mesh fields in strategic areas provide good ventilation. The sock has a terry sole and heel, to ensure good wearing strength.