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Darn Tough RFL Thermolite Over-the-Calf Ultra Light Socks

sku# 203249
Darn Tough - RFL Thermolite Over-the-Calf Ultra Light SocksDarn Tough - RFL Thermolite Over-the-Calf Ultra Light Socks
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Product Info

The expert's choice in socks for sensitive skin, the Darn Tough RFL Thermolite Over-the-Calf Ultra Light Socks will rock your world with their vegan and hypoallergenic THERMOLITE® composition on top of the standard state-of-the-art Darn Tough detailing. Silky smooth and with just the bare minimum of padding underfoot, these socks will allow the ultimate feeling for the snow.

Product Details


54% Nylon / 43% Thermolite® Polyester / 3% Lycra® Spandex


Ultra-LightDarn 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 HeightThe name says it all. The ultimate height for keeping the outside out.


No Cushion


Fast Action WickingPulls moisture away from skin. Fast drying.

Fine Gauge KnittingUnprecedented durability and our unique “put it on, forget it’s on” feel.

Guaranteed For LifeNo strings. No conditions. For life.

Performance FitFrom form fitting toe boxes to sculpted heel pockets and integrated arch support, Darn Tough's knitting techniques produce the finest fitting performance sock available.

True Seamless™Undetectable seam fusion for an ultra smooth, invisible feel.

Made in Vermont, USA


  • Material: Nylon, Polyester, Spandex
  • Made in the USA: Yes
  • Warranty: Limited Lifetime

Other Notes

Darn Tough products can only be shipped within the United States



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