John Henry was tough as nails and probably didn’t give a rip about being comfy while he worked. Then again he never had a chance to try our Work Socks. These workhorse socks offer all day comfort, durability and legendary Darn Toughness. 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 to work and no one will be the wiser.67% Merino Wool, 29% Nylon, 4% Lycra® SpandexStill made in Vermont. Guaranteed for life.Sock CareTo help ensure many happy miles with your Darn Tough Vermont socks we recommend that you machine wash them in warm water on gentle cycle with socks in-side out. Do not bleach. Tumble dry on low. Do not dry cleanMen's Size Small 5.5-7.5Medium 8-9.5Large 10-12XL 12.5+