Flying-saucer-worthy style comes easy in the Darn Tough® Vermont Men's Close Encounters hiking sock. So do massive peak bids, thanks to the smooth 1x1 ribbed cuff, performance fit, and climate-regulating Merino Wool for comfortable and dry trekking. We can't guarantee you'll have a supernature experience on the trail, but if you do, feel free to tell bigfoot Darn Tough® is still working on those custom XXXXXL sizes. Merino Wool: ultimate fiber for breathability and comfort in all seasons Performance Fit: no slipping, no bunching, and no blisters Fine Gauge Knitting: unprecedented durability and our unique “put it on, forget it’s on” feel Fast Action Wicking: pulls moisture away from skin for fast drying All Weather Performance: cool in the summer, warm in the winter Naturally Antimicrobial: repels bacteria and odor True Seamless™: undetectable seam fusion for an ultra smooth, invisible feel Light cushion soft terry loops underfoot and targeted protection over the ankle and Achilles Micro Crew Height: a shorter, more concise take on the traditional crew height that peeks just above the top of a standard hiking boot Sustainability: from responsible sourcing practices to livable wages in our communities, Darn Tough Vermont® is committed to progressive, positive, growth Made in Vermont, USA 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:58% Merino Wool, 39% Nylon, 3% Lycra Spandex Darn Tough Vermont Men's Close Encounters Micro Crew Midweight Hiking Sock