No matter how great your work boots are, if you’re wearing the wrong socks, you’re in for a long day of discomfort. The KEEN Utility Dura-zone work socks are built with the same durability and comfort KEEN Utility work boots are made of. The Dura-zone socks combine premium, moisture-wicking merino wool for natural breathability with high-tenacity nylon fibers in the heel and toe area which are, weight for weight, 15 times stronger than steel. The socks feature left and right design contoured to the foot with proven arch support, KEEN Wunderseam® seamless, toe-in flex zone that avoids bunching and a heel hold cup construction ensure a secure, natural and comfortable fit. KEEN Utility Dura-zone socks feature a lifetime guarantee proving they will go as many days on the job site as you put them through.