Devold Hiking Merino Liner is a really comfortable thin sock. This makes it the perfect sock for long hikes, since the thin material minimises the risk of blisters. If you easily get cold feet, as many of us do, this is the right sock to wear innermost, under a slightly thicker sock. Hiking Liner under a Hiking medium is a good combination in the winter. Hiking Liner is anatomically designed for left and right feet , has a Y heel with comfortable knit on the calf, and an ankle section for a stable, perfect fit. Reinforced toe and heel give extra wearing strength and ventilated mesh areas.