Darn Tough socks are hands down the best pair of socks you'll ever wear, the first sock you'll reach for in your sock drawer, and the longest lasting sock you'll ever own. The performance fit means no slipping, no bunching, and no blisters. The high stitch density of 1441 stitches per square inch provides extreme durability and excellent cushioning without excess bulk. High quality fine gauge knitting ensures unprecedented durability and Darn Tough's unique "put it on, forget it's on" feel. Fast action wicking pulls moisture away from the skin, and undetectable seams are fused together for an ultra-smooth, invisible feel.Our Merino Wool naturally repels bacteria and odor to ensure breathability and comfort in all conditions. The socks absorb sweat and odor so well that you can wear the same pair for several days without washing them! Never itchy, always comfortable. Warm in the winter. Cool in the summer.For almost 40 years, Darn Tough has been knitting premium socks in Northfield, Vermont. Crafting the world's most comfortable, durable, and best fitting socks is an ardent skill passed down from father to son for three generations. If your Darn Tough socks aren't the best socks you've ever owned, Darn Tough will replace them free of charge, for life, no strings attached.