Pennant RFL Over-the-Calf Ultra-Lightweight Sock Men’s

Pennant RFL Over-the-Calf Ultra-Lightweight Sock Men’s

Darn Tough

$31.00

The Pennant sock checks all the fit, comfort, style boxes with its next-to-skin, no-slip boot connection, fatigue-easing arch support, Merino Wool performance, and a dash of drop-needle design. 
  • Men's over the calf socks average 17 in. from heel to cuff - expect them to cover the leg to just below the knee.
  • A performance fit means no slipping, no bunching, no boundaries. Here's to feeling connected and comfortable in your boots mountain after mountain.
  • Multi-zone mesh panels improve venting and flexibility, while reducing bulk and pressure points.
  • Reinforced Achilles and footbeds improve the comfort, durability and fit of our socks so you can wear them cseason after season.
  • Merino Wool has a natural ability to move heat and moisture, keeping your feet warm and dry.
  • These silky, ultra-lightweight socks are smooth, breathable, and feel like a second skin between your feet and boots.
Medium: US 8-9.5
Large: US 10-12
Extra Large: US 12.5-14.5

 

Description

The Pennant sock checks all the fit, comfort, style boxes with its next-to-skin, no-slip boot connection, fatigue-easing arch support, Merino Wool performance, and a dash of drop-needle design. 

  • Men’s over the calf socks average 17 in. from heel to cuff – expect them to cover the leg to just below the knee.
  • A performance fit means no slipping, no bunching, no boundaries. Here’s to feeling connected and comfortable in your boots mountain after mountain.
  • Multi-zone mesh panels improve venting and flexibility, while reducing bulk and pressure points.
  • Reinforced Achilles and footbeds improve the comfort, durability and fit of our socks so you can wear them cseason after season.
  • Merino Wool has a natural ability to move heat and moisture, keeping your feet warm and dry.
  • These silky, ultra-lightweight socks are smooth, breathable, and feel like a second skin between your feet and boots.

Medium: US 8-9.5
Large: US 10-12
Extra Large: US 12.5-14.5

 

Additional information

Option

Eclipse (Med), Eclipse (XL), Eclipse (Lg)

ALPINE ASCENTS BLOG

  • Inside the Vinson Expedition with Bryce Hill

    Mount Vinson is Antarctica’s highest peak and one of the Seven Summits—a remote, high-altitude adventure in one of the most pristine places on Earth. Join veteran Vinson guide Bryce Hill in this recorded webinar as he takes you behind the scenes of this legendary climb, covering logistics, itinerary, gear, and his top tips for success. […]

  • Training for Denali Webinar

    If Denali is on your horizon, it’s time to get serious about training. Join world-renowned alpinist, Uphill Athlete founder, and co-author of Training for the Uphill Athlete, Steve House for a deep dive into what it truly takes to prepare for North America’s highest peak. In this session, Steve breaks down the key principles behind […]

  • Cascades Conditions Report 9/3/2026

    Hello climbers, It felt like the switch to fall happened in the mountains this week!  Cool temperatures and precipitation have returned to the mountains.  New snow returned to mid and upper elevations over the last couple days, and a handful of inches is expected over the next few days and leading into the weekend as […]

Partners & Accreditations

Alpine Ascents International is an authorized mountain guide service of Denali National Park and Preserve and Mount Rainier National Park.
© Copyright 2026 All Rights Reserved. Alpine Ascents International