Darn Tough Men's Pennant RFL OTC Ultra-Lightweight

Darn Tough Men’s Pennant RFL OTC – Ultra-Lightweight Knee-High Functional Sock

Darn Tough Men’s Pennant RFL OTC Ultra-Lightweight is a knee-high (OTC – Over The Calf) functional sock designed for those who demand maximum comfort, low weight and a reliable fit in ski boots and high boots. Perfect for skiing, touring, alpine skiing, snowboarding and other activities where precision and temperature regulation are crucial.

Ultra-lightweight feel – precise fit

The ultra-lightweight construction provides minimal volume in the ski boot without compromising support or durability. The sock stays securely in place all day long thanks to Darn Tough’s well-known fit, without slipping or creating creases.

Merino wool for comfort in all conditions

Pennant RFL is knitted in a merino wool blend that:

regulates temperature effectively

wicks away moisture

naturally combats bad odor

This makes the sock just as comfortable during intense rides as during long days in the cold.

OTC height - ideal for ski boots

The knee-high design protects the lower leg from chafing and pressure from ski boots, while providing a smooth and comfortable feel all the way up.

Built to last - lifetime guarantee

Like all Darn Tough socks, the Pennant RFL is made in the USA and comes with Darn Tough's lifetime guarantee - a testament to extreme durability and quality.

Product benefits

Ultra-lightweight knee-high ski and performance sock

Perfect for alpine, touring and ski boots

Merino wool for warmth, moisture transport and odor resistance

Stays in place - no slipping

Minimal bulk, maximum feel

Made in the USA with a lifetime guarantee

The Darn Tough Men's Pennant RFL OTC Ultra-Lightweight is a premium choice for those looking for a technical, thin and extremely durable sock for demanding winter and mountain activities.