Aliens, bears and camels: Darn Tough® Vermont named this sock after everything you’re likely to see on an un-average hike, and built it with enough cushioning to keep you cozy when the going gets weird. Performance Fit: no slipping, no bunching, and no blisters Fine Gauge Knitting: unprecedented durability and unique “put it on, forget it’s on” feel Fast Action Wicking: pulls moisture away from skin;fast drying All Weather Performance: cool in the summer, warm in the winter Naturally Antimicrobial: repels bacteria and odor Merino Wool: ultimate fiber blend for breathability and comfort in all conditions True Seamless™: undetectable seam fusion for an ultra smooth, invisible feel Cushion: mid-level cushion density under foot Boot Height: sits mid-calf for added protection and warmth; a sturdy companion Still Made in Vermont, USA: Darn Tough® can't imagine it any other way Size Chart: Medium fits Men's shoe sizes 8 - 9.5 Large fits Men's shoe sizes 10 - 12 XL fits Men's shoe sizes 12.5 - 14.5 Recommended Sock Care: To 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 clean. Product Features: Fabric:60% Merino Wool, 38% Nylon, 2% Lycra® Spandex Darn Tough Vermont Men's ABC Cushioned Boot Sock