This sock is as hard working and tenacious as the Nordic skiers it was designed to perform for. This version of our Nordic Boot sock has a dampening layer of cushioning along the bottom of the foot that adds extra support and comfort. Fine gauge Merino Wool provides consistent warmth and breathability. And since Merino Wool is naturally antimicrobial this sock repels bacteria and odor. Ideal for vigorous winter excursions like snow shoeing and cross-country skiing. Simply put, it's a great winter sock for any activity. Still made in Vermont. Guaranteed for life. Merino Wool - Darn Tough custom count, shrink treated Merino wool enhances the comfort and durability that outdoor enthusiasts have come to expect from this fiber. True Seamless - Using the latest generation of Italian knitting machines, Darn Tough are able to knit ultra-light yet extremely dense socks with an undetectable toe seam, here in Vermont. The result is miles and miles (and miles) of blister-free bliss. Feel the difference of feeling nothing at all!