From the backcountry to the boardroom the Standard Issue Mid-Calf delivers legendary Darn Toughness with sophisticated styling. Versatile to the core these socks go way beyond the expectations of an everyday sock. Fine gauge Merino wool keeps them cool in the summer and warm in the winter. True Seamless construction makes them irresistibly comfortable. Plus they're anti-microbial and breathable so you can wear them more than once while you're traveling and no one will be the wiser.