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Smartwool - Performance Outdoor Heavy Over The Calf Sock

Smartwool Performance Outdoor Heavy Over The Calf Sock

35% Off
$18.82 Original price:$28.95
Changing the size selection, or changing the selected color after selecting a size, may change the associated price

Item #SWL00N4




Tech Specs

74% merino wool, 24% nylon, 2% elastane
14 in over-the-calf
Recommended Use:
hiking & camping
Manufacturer Warranty:
2 years

PhD Outdoor Heavy Over The Calf Sock

Before you step out of your tent after a cold, stormy night, switch out of your sleeping socks and into the SmartWool PhD Outdoor Heavy Over The Calf Sock to see what awaits outside your door. SmartWool's signature hard-wearing wool, nylon, and elastane blend will regulate your temperature through harsh alpine conditions, while ensuring your feet can breathe when you start to work hard. Whether you're shoveling the driveway or making a summit push, trust this plush over-the-calf sock to take care of your toes.

  • Warm your toes in bone-chilling temps with this plush sock
  • Merino wool blend regulates temperature and wicks moisture
  • Heavy weave takes up space but adds extra insulation

Winter warm

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: True to size
  • Size Bought: M

Can’t wait to wear these on my winter Alaska trip. I think paired with my sorel boots, I’ll be cozy. Very gushy and soft.


  • Familiarity: I've put it through the wringer

Definitely thick! The thickness reminds me of those blue AYSO soccer socks that they gave you as a kid, only you can tell right off the package these are top quality. They have a rib at the top that hugs the calf and makes it so they don't slip which I love. I also really enjoy the fit and how it contours to your foot is an awesome feeling and after several washes still holding strong.

Learn More: Smartwool PhD Socks

    Learn more about the comfort, fit, and durability of Smartwool PhD performance socks. #gofarfeelgood

    What a thick sock should be

    • Familiarity: I gave it as a gift but have feedback to share

    Plenty of material, comfort, and warmth. Can't go wrong with this offering from SmartWool!

    Great Socks

    • Familiarity: I've put it through the wringer

    Can't go wrong with Merino socks. Feel great and provide plenty of warmth. Plus, Smartwool's warranty is top notch, should you eventually wear a hole in them!

    Extra warmth and cushion

      These are some of the warmest socks I've owned, I typically only wear them on the "extra cold" days. The will bunch up occasionally but overall they keep your feet almost too warm and comfortable.

      Great Socks

        Provide plenty of cushion, can't go wrong.


        US MEN 3 - 5.5 6 - 8.5 9 - 11.5 12 - 14.5
        US WOMEN 4 - 6.5 7 - 9.5 10 - 12.5  
        EU 34 - 37 38 - 41 42 - 45 46 - 49
        UK 2 - 4.5 5 - 7.5 8 - 10.5 11 - 13.5
        Calf Circumference

        11 - 14.5in

        (28 - 36.5cm)

        12.5 - 16.5in

        (32 - 41.5cm)

        14.5 - 18in

        (37 - 45.5cm)

        16 - 23in

        (41 - 58cm)

        US 6 - 8.5 9 - 11.5 12 - 2.5 3 - 6
        EU 22 - 25 26 - 28 29 - 32 33 - 36
        UK 5 - 7.5 8 - 10.5 11 - 13.5 1 - 4.5
        Use your shoe size to find your correct sock size.
        *Compression Socks and Calf Sleeves fit the same calf circumference as corresponding sock sizing.