Boot height but light weight, Darn Tough® Vermont Spur is a unique sock that's as versatile as they come. Revel in a performance fit that integrates perfectly with your boots for miles of comfort. 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: the ultimate fiber for breathability and comfort in all conditions True Seamless™: undetectable seam fusion for an ultra smooth, invisible feel Light Cushion: light and strong with a thin layer of cushioning along base of foot Boot Sock Height: sits mid-calf for added protection and warmth Still Made in Vermont:Darn Tough® knits all their socks at their Vermont-based Mills - they 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, 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:50% Nylon, 45% Merino Wool, 5% Lycra® Spandex Darn Tough Vermont Men's Spur Light Cushion Boot Sock