Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
100% Merino Wool Isolation Men's 1/4 Zip - Midweight
100% Merino Wool Isolation Men's 1/4 Zip - Midweight
100% Merino Wool Isolation Men's 1/4 Zip - Midweight
100% Merino Wool Isolation Men's 1/4 Zip - Midweight
100% Merino Wool Isolation Men's 1/4 Zip - Midweight
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
100% Merino Wool Isolation Men's 1/4 Zip - Midweight
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
Minus33 Merino Wool Clothing Isolation Men's Midweight Wool 1/4 Zip
100% Merino Wool Isolation Men's 1/4 Zip - Midweight
100% Merino Wool Isolation Men's 1/4 Zip - Midweight
100% Merino Wool Isolation Men's 1/4 Zip - Midweight
100% Merino Wool Isolation Men's 1/4 Zip - Midweight
100% Merino Wool Isolation Men's 1/4 Zip - Midweight
100% Merino Wool Isolation Men's 1/4 Zip - Midweight
100% Merino Wool Isolation Men's 1/4 Zip - Midweight
100% Merino Wool Isolation Men's 1/4 Zip - Midweight

100% Merino Wool
Isolation Men's 1/4 Zip

Midweight

Regular price $99.99 Save $-99.99
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Shipping calculated at checkout.


Black
Charcoal Gray
Navy
Forest Green
Olive Drab Green
Tan 499
Desert Sand
Blaze Orange
True Red
Burgundy


Versatility. Versatility. Versatility. Did we mention this ¼ zip is versatile? Comprised of our Midweight fabric, it provides the extra warmth and insulation you need when battling the cold. Ideal for when temperatures vary throughout the day, zip it up to utilize the mock neck or unzip it to vent out unwanted body heat. Take it on your next outing and you’ll soon find you won’t leave home without it!

  • Style has been updated with thumbholes.
  • Previous Skus with NO thumbholes include the following:
    • Forest Green - Medium
    • Charcoal Gray- Medium SOME
    • Desert Sand - Medium, Large and XX-Large and SOME X-Large
  • Previous size color combinations are limited stock, eventually being eliminated to all include thumbholes for an up to date style.
Fabric
  • Fiber Content: 100% Merino Wool
  • Knit: 235 g/m2 Midweight Interlock Knit
  • Microns: 18.5 Micron Fibers
  • UPF Rating: 50+
  • Total Easy Care: Machine Wash and Dry
  • Wool Source: Australia
  • Imported.
Features
  • Neckline: 1/4 Zip Mock Neck
  • Yoked Shoulders: Seams are offset from your shoulder for a more comfortable backpack fit
  • Tagless Label: No Itchy Neck Tags
  • Zipper: YKK Semi-Auto Locking Zipper Pull
  • Zipper Garage: Keeps fabric between the zipper and your skin
  • Light and Packable
  • Flat Lock Seams: Prevents Chafing
  • Layer Type: Base Layer, Mid Layer, Insulating Layer
  • Fit Type: Regular - Standard fit with a little bit of room to breathe, but not too baggy
  • Model Features: The model wearing tan is 5'10 / 150 lbs wearing a size medium
  • Runs True to Size - If you like a more athletic, tight fit, try sizing down
  • Weight: Size Large = 12.8 oz. (363 grams)
  • Style #: 714
    Uses
    • Ideal Seasons: Spring, Fall, Winter
    • Activities: Everyday Wear, Hiking, Camping, Biking, Running, Fishing, Hunting, Snowsports
    • Temperature Recommendations: 30°F to 0°F while active, 30°F to 60°F while inactive - Learn More
    Care

    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

      Isolation [ahy-suh-ley-shuh n]

      When trekking your way to the summit of this mountain you may find yourself in temporary isolation in its pristine forests. As its name implies, Mount Isolation stands alone at the southern end of White Mountain Presidential Range. Epic and alone, it is on the list of New Hampshire’s 48 4,000 foot or higher mountains and often the last peak to be climbed.

      Couple Wearing Minus33 Midweight Merino Wool Base Layer Outfits

      Midweight
      Merino Wool

      Versatile and comfortable, our Merino Wool will always have your back. Designed as a three-season garment, our Midweight works great as either a base or mid layer.

      Midweight Details

      Our Midweight styles have all the same natural qualities as our Lightweight Merino Wool, with greater insulation. Minus33 Merino Wool Clothing is perfect as a base layer for a day on the slopes or as an emergency pullover when a cold front rolls in just before you summit.

      235 g/m2

      Interlock Knit

      18.5 Micron

      100% Merino Wool (Woolverino 85% Merino Wool)
      UPF Rating 50+

      Compare Weights

      RECOMMENDED FOR

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

      Seasons: Spring, Fall, Winter.

      High Activity Temperatures: 0°F to 30°F

      Low Activity Temperatures: 30°F to 60°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.

      Anti-Microbial

      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+.

      Renewable

      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. 

      TOTAL EASY CARE

      MACHINE WASH AND DRY

      Learn More

      Customer Reviews

      Based on 90 reviews
      92%
      (83)
      4%
      (4)
      2%
      (2)
      1%
      (1)
      0%
      (0)
      D
      Daniel E Chase
      Perfect

      Soft & warm. Quality Merino wool, excellent construction. Perfect as a mid-layer for biking & hiking

      Daniel,

      Thank you for the great review! We are happy to hear that you are enjoying your Isolation 1/4 Zip. Have fun biking and hiking!

      -Melinda W.

      B
      Bob Chase
      A great midweight

      Minus 33 has become my go to favorite for wool clothing. This piece did not disappoint- it is very warm, comfortable, very well made. I have used it almost daily since receiving it and anticipate using for years to come.

      J
      Jeff Hamn
      TENNESSEE TRUTH

      GOOD BUILD, GOOD JOB SO FAR 2 WEEKS
      NICE OD GREEN COLOR, GOOD COLLAR HEIGHT, NICE ZIPPER PULL TAB AT NECK WITH NO METAL TO NECK FABRIC FOLD GUARD, GOOD NECK ROOM NOT TOO TIGHT - CAN TAKE ON AND OFF WITHOUT UNZIPPING BUT STILL SNUG FOR COMFORT, GOOD LONG STAY TUCKED IN LENGTH AT SHIRT TAIL - THIS IS WHERE SOME COMPANIES LACK, NICE HIDDEN THUMB THUMB HOLES AT SLEEVES, NICE NO TAG OR LABLE AT NECK - WISH THE PANTS HAD THIS ALSO, THANKS M33, 100 MERINO, SOFT, REAL, NATURAL, GOOD QUALITY. NEED HEAVY WEIGHT IN OD GREEN COLOR AS WELL. THE Balaclava FACE MASK IS NICE AS WELL, SIMPLE OPEN FACE DESIGN WITHOUT ANY CRAZYNESS.
      KEEP UP THE GOOD WORK

      Thanks for your review! We're glad you're loving it so far!

      A
      Anthony Cotter
      Perfect sizing

      Love the torso length to girth ratio. I’ve been buying your gear because it fits my 6’ tall 44” chest and 34” waist well when other company’s size L have a huge belly built in. Plus the product quality has been outstanding. I love layering multiple weights!

      Glad it works out so well for you! Thank you for your review.

      A
      Alex Sanford
      4.5 stars, excellent quality!

      I'm extremely happy with the quality of the garments and service I've received from Minus33, and while i haven't had the opportunity to wear them in the proper environment yet, i trust that they'll perform well during my upcoming time in Antarctica.

      My only complaint is that this model showed a thumb hole as a feature in the product pictures, and it was a motivating factor in my purchasing this top vs. other models. I was disappointed to find upon recieving it that the top I recieved did not in fact have thumb holes.