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The sock found on more evo employee's feet than any other, the Darn Tough RFL Over-the-Calf Ultralight Socks provide the thinnest, smoothest interface between your boot and the snow in the industry. When you throw in super wicking capability and unreal durability, it's no wonder pros and hopefuls alike gravitate toward the RFL.
60% Merino Wool / 36% Nylon / 4% Lycra® Spandex
Ultra-Light – Darn Tough's lightest sock for race day or anyone looking for a lighter-than-air feel from a tougher than hell sock.
Over the Calf
Ultra-Light Cushion – Darn Tough's lightest sock for race day or anyone looking for a lighter-than-air feel from a tougher than hell sock.
Performance Fit – From form-fitting toe boxes to sculpted heel pockets and knit-in elastic support at the arch, Darn Tough knitting techniques produce the finest fitting performance sock available.
Fine Gauge Knitting – Unprecedented durability and our unique “put it on, forget it’s on” feel.
Merino Wool – Darn Tough's custom count, shrink-treated Merino wool enhances the comfort and durability that outdoor enthusiasts have come to expect from this fiber.
Naturally Antimicrobial – Repels bacteria and odors.
Fast Action Wicking – Pulls moisture away from skin. Fast drying.
All Weather Performance – Cool in the summer, warm in the winter.
True Seamless™ – Undetectable seam fusion for an ultra smooth, invisible feel.
Guaranteed For Life – No strings. No conditions. For life.