Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip
100% Merino Wool Kobuk 1/4 Zip - Expedition Weight

100% Merino Wool
Kobuk 1/4 Zip

Expedition Weight

Regular price $139.99 Save $-139.99
Shipping calculated at checkout.


When it’s cold out, are you the first to go out and the last to come in? Even if it’s windy? Even if it’s snowing? If you said yes, then this top is calling your name. This ¼ zip features thumb holes, a mock neck, and a zipper for venting. You’ll love the warmth and comfort it provides while you are battling the elements! Pair this with our Katmai Men's Expedition Wool Bottom and we guarantee you’ll stay toasty warm all day long.

  • Fiber Content: 100% Merino Wool
  • Knit: 400 g/m2 Expedition Interlock Knit
  • Microns: 18.5 Micron Fibers
  • UPF Rating: 50+
  • Total Easy Care: Machine Wash and Dry
  • Wool Source: Australia
  • Imported.
    • Neckline: 1/4 Zip Mock Neck
    • Thumbholes: Allow for easy layering and added hand warmth
    • Tagless Label: No Itchy Neck Tags
    • Zipper: YKK Semi-Auto Locking Zipper Pull
    • Zipper Garage: Keeps fabric between the zipper and your skin
    • Flat Lock Seams: Prevents Chafing
    • Layer Type: Mid Layer, Insulating Layer
    • Fit Type: Regular - Standard fit with a little bit of room to breathe, but not too baggy
    • Runs True to Size
    • Weight: Size Large = 19.2 oz. (544 grams)
    • Style #: 723
      • Ideal Seasons: Fall, Winter
      • Activities: Everyday Wear, Hiking, Camping, Biking, Running, Fishing, Hunting, Snowsports
      • Temperature Recommendations: 0°F and below while active, 0°F to 30°F while inactive - Learn More

        Washing and Drying Instructions - Learn More

        • Turn Inside Out
        • Machine Wash Cold: Gentle cycle with like colors
        • Detergent: Mild or wool-specific
        • Tumble Dry: Low heat
        • Storage: Place in an airtight container when not in use for long periods of time
        • Do NOT Use: Fabric softener or bleach!
          Product Story

          Kobuk [koe-book]

          Kobuk Valley is home to a National Park, 500,000 migrating Caribou, majestic sand dunes, and the life of them all, the Kobuk River. Being so remote and with no roads leading to this beautiful place, it’s not hard to see why so few travelers make it to see the annual Caribou migration. Kobuk Valley is located inside the Arctic Circle, where temperatures can fall as low as -50 degrees Fahrenheit in the winter night.

          MERINO WOOL

          On the coldest, darkest nights, you will discover yourself seeking the warmth of Minus33 Merino Wool. Our Expedition products are suitable for the coldest climates and true expeditions.

          Expedition Details

          Originally designed for winter mountaineering on Mount Washington, Minus33 Expedition Weight clothing has seen action in both the Antarctic and Arctic, and even to the Summit of Mount Everest. Anyone venturing out in the cold will greet our Expedition clothing with a warm welcome as either a base, mid or outer layer. When you need to keep the ever-present cold from seeping in, our Expedition items will be your best friend.

          400 g/m2

          Interlock Knit

          18.5 Micron

          100% Merino Wool
          UPF Rating 50+

          Compare Weights


          Activities: Hiking, Camping, Lifestyle, Snowsports, Hunting, Ice Fishing.

          Seasons: Fall, Winter

          High Activity Temperatures: 0°F and below

          Low Activity Temperatures: 30°F to 0°F

          Learn About Layering

          Why Merino Wool?

          Moisture Wicking

          Minus33 Merino Wool regulates the amount of moisture on your skin by absorbing any moisture or sweat on your body. Then, the absorbed moisture evaporates out of the fabric into the atmosphere.


          Merino Wool fibers naturally reject any bacteria in moisture or sweat as it is wicked away, so foot fungus and smelly odor will not be a problem while wearing our products.

          Insulates When Wet

          Wool will absorb up to 30% of its weight in moisture without feeling wet or clammy. If you do get wet, wool will insulate you better than cotton or polyester materials.

          Fire Resistant

          Merino Wool insulates against high temperatures and does not readily catch fire. If it does, it self-extinguishes. When Merino burns, it doesn’t melt and stick to the skin like synthetic fabrics do.

          UV Protection

          Don’t worry about sunburn on a sunny day summiting a peak. Lightweight layers have a UPF rating of 25. Midweight and Expedition have a UPF rating of 50+.


          Merino Wool has a low environmental footprint and naturally returns to the elements. Shear a merino sheep in the morning, and in the afternoon they’re happily nibbling their way towards renewing next season’s clip. 



          Learn More

          Customer Reviews

          Based on 11 reviews
          Great shirt, although neck a little loose

          This is my third expedition weight piece (see my review of the crew neck, which I love), and it's great. Really like the long sleeves with thumb-holes - great for people like me with long arms (35"). My one complaint is that the neck is so loose - as you can see on the model. I have a 17" neck and the large is at least 2" too big around for me

          We're glad you like the Expedition pieces! Thumb holes are a must have for long sleeves in the winter!

          Worth it!

          Very stylish, warm and comfortable, do not regret my purchase.

          William Bates
          Wool thermal underwear

          Wonderful, great quality and great service


          Thank you for the great review! We are happy to hear how much you like your thermal underwear.

          Jeannie T.

          Michael Peluso

          like the fit and heavy fabric

          Michael, we're so glad to hear you're loving your expedition 1/4 zip. Thank you for letting us know! -Felicia W.

          Ronald Crawford

          Love it

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