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The Darn Tough RFL Ultra-Lightweight OTC Socks are a pinnacle of performance gear: made with an ultra lightweight and breathable merino wool fabric blend that's perfect for riders looking to hit the steep and deep. Featuring a reinforced heel that adds durability and zero cushion for a close to body fit, these socks are made to go fast all season long.
56% Nylon / 40% Merino Wool / 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 Height – The name says it all. The ultimate height for keeping the outside out.
16.25in From Heel to Cuff
No Cushion – These no cushion socks are ultralight and smooth - these are the best thin socks for skiing or snowboarding.
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.
Multi-Zone Mesh Panels – The mesh panels improve venting and flexibility while reducing bulk and pressure points.
Reinforced Achilles Cushion – Reduces heel lift, which helps socks feel better on and last season to season.
Reinforced Footbeds – Improve the comfort, durability and fit of Darn Tough socks so you can wear them season after season.
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.