This item contains PFAS and cannot be shipped to California, New York, or Colorado.
This product is not available to ship to Canada, CA, NJ, NY, MA, LA, MN, MI, ME, VT, RI.

BD Extra Heavy Mid-Calf Merino Socks

BD Extra Heavy Mid-Calf Merino Socks

$30.00 USD
$30.00 USD $30.00
Sale Out of Stock
#AP7250021014SML1

Our maximum weight of cushioning for protection and comfort during long days and nights on your feet.

  • Nickel Heather
1 1

BD Extra Heavy Mid-Calf Merino Socks

BD Extra Heavy Mid-Calf Merino Socks

$30.00 USD
$30.00 USD $30.00
Sale Out of Stock
#AP7250021014SML1

Our maximum weight of cushioning for protection and comfort during long days and nights on your feet.

Color: Nickel Heather
Size: S

Orders over $99 ship free within the Lower 48.

Features

  • Made in partnership with Peter and Patty Duke, founders of Smartwool and owners of Point 6 Merino
  • Merino wool sock with natural thermoregulation
  • Heavy cushioning surrounding entire foot and leg
  • Reinforced heel and toe
  • Arch support keeps sock snug across instep
  • Nylon reinforcement in high-wear areas for durability

Spec

  • Weight: 106 g
  • Size Range: S-L
  • Country of Origin: US

Materials

  • 77% Wool, 20% Nylon, 3% Elastic

Socks are the foundation to every kit.

At Black Diamond we partnered with expert sock makers, Peter and Patty Duke, to create a line of merino socks for every mountain pursuit. The BD Extra Heavy Mid-Calf Merino Sock is a solid performer in all weather conditions and temperature zones. Merino wool works with your body temperature to keep you warm and dry, and the extra cushioning provides lasting comfort while going the distance.

Practical Product Lifetime Warranty

We trust what we make because we use what we make.

2-Year Warranty

We trust what we make because we use what we make.

Protect What Matters

From clean climbing, to conservation, Black Diamond is committed to protecting the people and places we love.

View full details

What customers are saying

★ 4.5 · 17 reviews

Reviewers say these socks keep feet warm in severe cold, with comfortable cushioning and good durability. They use them for high-altitude mountaineering, skiing, snowboarding, cold-weather hiking and daily wear in boots. A couple of reviewers found them thicker than expected.

Customers like
  • Very warm in extreme cold
  • Cushioned and comfortable
  • Durable, high quality
  • Resists odor
  • Great for mountaineering and skiing

Keep in mind
  • Thicker than some expected

AI-generated summary of verified customer reviews.

Overall rating: 4.5 / 5 from 18 reviews.

AI Generated Review Summary

Summary topics

Review topics: [].

Review highlights

Reviews

buenos

"buen calce"

— Meg d. (5/5)

Filler. No different than SmartWool

"I just got these to meet a minimum order. They are nothing over and above similar products from Smartwool and others."

— Daniel K. (1/5)

4 stars

"Not as heavy duty as other pairs of socks that I own, but great for snowboarding in colder conditions or cold weather hikes."

— Emily T. (4/5)

Too thick

"Socks much thicker than expected, could I exchange for medium socks?"

— Henry W. (1/5)

Perfect for severe cold conditions.

"Perfect for severe cold conditions. Comfortable and durable."

— DC B. (5/5)

Great Socks

"Used on Cotopaxi and Chimborazo. Perfect for long, extended pushes. Thank you so much. Will buy again."

— Ian R. (5/5)

Comfy

"Great padding and plenty warm for my white mountain climbing. I use them in uninsulated mountaineering boots. Feet stay nice and warm"

— Davis B. (5/5)

Life upgrade

"My feet are always warm ! The merino wool ensures that they don't get smelly. Really recommended"

— Alexander U. (5/5)

Great Sock

"Feels similar to Smart Wool's expedition weight sock."

— Doug D. (5/5)

Best socks

"Comfy, cushy, great fit"

— Michaella Y. (5/5)

Q&A