Darn Tough® Vermont's most versatile sock. Dense, resilient terry loop cushioning surrounds the calf, foot bottom, and toes. Elastic arch support for a snug, performance fit. Reinforced toe and heel for increased durability. Performance Fit - no slipping, no bunching, and no blisters Merino Wool and Nylon stretch knit - ultimate fiber for breathability and comfort in all conditions Fine Gauge Knitting - unprecedented durability and 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 Mid-level cushion density under foot - warm and ultra-comfortable choice when conditions demand it 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 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. Size Chart: Medium fits Men's shoe sizes 8 - 9.5 & Women's shoe sizes 10 - 12 Large fits Men's shoe sizes 10 - 12 & Women's shoe sizes 12- 14 XL fits Men's shoe sizes 12.5 - 14.5 Product Features: Fabric:62% Merino Wool, 36% Nylon, 2% Lycra® Spandex Darn Tough Vermont Men's Tactical Boot Cushion Crew Sock