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Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip. Alternate view.
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip. View 2.
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip, studio front view
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip, right-facing side view
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip. 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&
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip, back view
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip, right-facing side view rear three-quarter view
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip, front three-quarter view left-facing side view
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip, front three-quarter view
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip. Alternate view.
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip. View 2.
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip, studio front view
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip, right-facing side view
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip. 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&
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip, back view
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip, right-facing side view rear three-quarter view
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip, front three-quarter view left-facing side view
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip
Minus33 Merino Wool Clothing Kobuk Expedition Wool 1/4 Zip, front three-quarter view

Heavyweight 400 Men's 1/4 Zip 100% Merino Wool

$179.99
/
Color
Size
Size chart

Measurements

Please note, measurements refer to body size, not garment dimensions, unless otherwise noted. Measurements are in inches.


Men's Clothing Size Chart


Size

Chest

(in)

Waist

(in)

Sleeve Length

(in)

Shirt Length

(in)

Inseam

(in)

Outseam

(in)
XS 33-35 24-27 30-31 25.5-26.5 25-27 36
S 35-38 28-30 31-32 26.5-27.5 28-30 37 1/4
M 39-41 31-33 32-33 27.5-28.5 29-32 38 1/2
L 42-45 34-36 33-34 28.5-29.5 32-34 39 3/4
XL 46-48 37-40 34-35 29.5-30.5 32-35 41
XXL 49-52 41-44 35-36 30.5-31.5 34-35 42 1/4
XXXL 52-54 45-49 36-37 31.5-32.5 34-36 43 1/4



Men's Big and Tall Clothing Size Chart


Size

Chest

(in)

Waist

(in)

Sleeve Length

(in)

Shirt Length

(in)

Inseam

(in)

Outseam

(in)
MT 39-41 31-33 35-36 30.5-31.5 32-34 42 1/2
LT 42-45 34-36 36-37 31.5-32.5 33-36 43 3/4
XLT 46-48 37-40 37-38 32.5-33.5 33-36 45
2XT 49-52 41-44 38-39 33.5-34.5 34-36 46 1/4
3XT 52-54 45-49 39-40 34.5-35.5 35-37 47 1/2
4X 54-57 49-52 36-37 32.5-33.5 34-36 44 3/4
4XT 54-57 49-52 40-41 35.5-36.5 35-37 48 3/4
5X 57-59 52-54 36-37 33.5-34.5 34-36 46
6X 59-61 54-56 37-38 34.5-35.5 34-36 47 1/4

How to Measure

Chest: Measure the circumference around the fullest part of your chest, underneath the arms.

Waist: Measure the circumference around the natural waist, near the belly button.

Sleeve: Measure from your center back neck, to the elbow, to the wrist.

Shirt Length: This measurement refers to the approximate size of the shirt back length, from the neck to the bottom hem.

Inseam: Measure from the center of the crotch to the end of the ankle.




Fit Types

Athletic Fit Regular Fit Relaxed Fit
Athletic Fit Regular Fit Relaxed Fit

Fits best as: Base Layer

Skin tight, slim, compression style fit. Wear this layer first and add on top of it if needed.

Fits best as: Base Layer, Mid Layer

True to size, standard fit with a little bit of room to breathe, but not too baggy. Perfect on its own or with a t-shirt or thin shirt underneath.

Fits best as: Mid Layer, Insulating Layer, Outer Layer

A little more room than you would find in a Regular fit. Enough space to fit 1-2 layers underneath.

Fit FAQs

What if I am between sizes?

If you are between sizes, we recommend sizing up or down based on what fit type you would prefer, and based on how you plan to wear the piece. Our knitted merino is stretchy and you could realistically go with either size. If you would prefer an Athletic fit, size down. If you prefer a Regular or Relaxed fit, size up.

Do I need to size up/down to layer?

Generally, no, you do not need to purchase a different size than normal. Our base layers are designed to fit right into your current layering system. They are also designed to work with other products in our line, too. You may wish to adjust your sizing if you plan to wear one of our garments in a way that it is not intended. If that is the case, please feel free to contact our customer service team for help.

Does your clothing run true to size?

Yes, our clothing runs true to size and is sized similar to most other American brands. If a sizing discrepancy is discovered, you will see fit advice in that product's specific listing.

Not sure what size or fit type you need?

Learn more about layering systems and how they can help you choose. Still need help? Contact our customer service team for personalized advice.
  • In stock, ready to ship
  • Backordered, shipping soon
OEKO-TEX Standard 100

This certified product has been tested against a list of over 1,000 harmful substances, including PFAS.

Our Guarantee

You may also like

heavyweight merino wool sweater 1/4 zip pullover warm for winter

HEAVYWEIGHT MERINO WOOL

  • 400+ g/m
  • 100% Australian Merino Wool
  • Machine Wash & Dry
  • UPF 50+

Our heavyweight Merino wool is a durable, insulating layer built for long days outside. Whether you're ice fishing, working outdoors, or tackling winter chores, this fabric keeps you warm and comfortable without overheating. Layer it up or wear it on its own in the cold. Learn about Merino wool fabric weights

Temperature (°F)

Temperature Icon
0°-30°
30°-60°
60°-90°

Activity Level

Activity Icon
LOW
MEDIUM
HIGH

Benefits of Merino Wool

Wool is naturally anti-odor
Wool is naturally moisture wicking
wool is naturally chemical free
wool is warm when wet
wool is renewable and sustainable
wool is naturally breathable
wool can protect you from uv radiation
wool is naturally fire resistant
Our Merino Wool Is Machine Wash & Dryable
Merino Wool Is Naturally Temperature regulating
  • 5 stars: 42 (95%)
  • 4 stars: 1 (2%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 1 (2%)
A
ANDREW L. (Methuen, US)
Variant: Navy / 3XL
Primary Activity: Casual / Lifestyle
Very comfortable and warm Merino Wool 1/4 zip

A very comfortable and warm heavyweight Merino Wool 1/4 zip top.

N
Nicholas W. (Campbellsport, US)
Variant: Black / 3XL
Height: 6'3"
Weight: 295#
Primary Activity: Hunting
Fits great and very comfortable

Fits great and very comfortable. We'll see if it holds up to this coming Wisconsin winter.

We're thrilled to hear that you're loving the fit and comfort of the Heavyweight 1/4 Zip.

It was definitely built to handle cold conditions, so we're confident it'll keep you warm and comfortable through the Wisconsin winter whether you're out hunting or braving the everyday freeze.

Thanks for choosing Minus33, and stay warm out there!
The Minus33 Team

A
Anonymous (Boise, US)
Variant: Navy / XL
Height: 5’11”
Weight: 204
Great 1/4 zip, love the heavyweight wool

Great 1/4 zip, love the heavyweight wool. Comfy, warm and durable (unless your 5 month old puppy chews on it all night😬).

A
Anonymous (Denver, US)
Variant: Navy / L
Height: 6'1"
Weight: 170
Primary Activity: Hiking
Pricy, warm, and comfortable

Pricy but warm and comfortable.
I'm trying this because I've been unhappy with durability of the mid-weight equivalent. I hope I agree with my 5-star rating in a year.
I have long arms and usually need to buy a tall, but the sleeves on this are perfect.
One note - maybe it's a trick of my eyes, but the color dot for the navy is much darker than the actual garment. But the color in the larger pictures does match, so I wasn't surprised.

A
Anonymous (Billings, US)
Variant: Black / M
6' 1" 175 medium is perfect

6' 1" 175 medium is perfect. Very comfortable and warm

J
John M. (Minneapolis, US)
Variant: Black / L
Height: 6’ 2”
Weight: 200
Nice heavy weight top and great fit

Nice heavy weight top and great fit. Thumb holes well constructed for outdoor use and indoor you just roll cuff up. I do a lot of fishing when it’s cold and this works great to keep me warm.

B
Becca O. (Chicago, US)
Variant: Black / M
Height: 5’11”
Weight: 175
Primary Activity: Workwear
I am a tall woman, this is my second purchase of

I am a tall woman, this is my second purchase of this shirt. I live in it all winter, farming, logging, wore the cuffs right out! Absolutely perfect, wish it were made in the USA, but I’ve tried others, and always return to this shirt. Cannot be beat

We are happy to hear that this has become a staple in your winter wardrobe and has withstood the test of farming and logging. We are glad to know that you find it to be the perfect shirt. We appreciate your feedback- thank you for your loyalty and we look forward to serving you again in the future.

C
Cory G. (Glenwood, US)
Loving it!

Really enjoying my Kobuk 1/4. More versatile than I was expecting. Have worn it as a base layer sitting in the deer stand in the teens with wind, and as both a base and mid layer when hiking anywhere from 0 to -35. Fit is great and able to layer accordingly with it. Excited to play around with different layering variations next winter.

Hi there!

Thank you so much for taking the time to leave such a wonderful review for our Heavyweight - Kobuk 1/4 Zip! We are thrilled to hear that you are enjoying its versatility and that it has been able to keep you warm in various weather conditions. Happy Hunting!

Best,
Sierra S

D
Dan W. (Tioga, US)
Almost indestructible

My several year old quarter zip mock t got caught by the lint filter in my dryer. It probably spun snagged by one sleeve for over an hour in a full dryer. It came out looking horrible, had a few small holes, and i thought i would be investing in another to replace it. On a whim, i ranit through the wash and threw it back in the dryer. When it finished it was back in its normal shape, with only a few small holes as a witness to its ordeal. Several years later I still wear it whenever it gets down near zero f. Same holes, same size, and as warm and comfortable as ever. Hard to believe, but true.

Dan,

Thank you for taking the time to leave a review for our Expedition 100% Merino Wool Kobuk 1/4 Zip. We are thrilled to hear that your quarter zip mock t proved to be almost indestructible, even after going through a tough time in the dryer. We take great pride in creating high-quality and durable products, and we are glad that yours stood the test of time. We hope you continue to enjoy its warmth and comfort for years to come. Thank you for choosing our brand and for sharing your experience.

Stay warm,

-Minus33 CS

M
Mike (Saint John, US)
Variant: Navy / 2XL
Almost too warm

I love the top. I thought expedition weight would be too much, but no. I do have different weights for different days. I will be buying more for me and my wife.

Mike,

Thank you for your positive feedback about our Expedition - Kobuk 1/4 Zip! We're glad to hear that it has exceeded your expectations in terms of warmth. We also offer different weights for varying weather conditions, so feel free to explore our options for your future purchases. Thank you for your support and we hope to continue providing you and your wife with quality merino wool products.

-Jeannie

D
Derrick

So comfortable and great base layer. Keeps me warm fly fishing in below freezing temps without sweating from the hike into the water.

B
Barbara P.P. (Ashburn, US)

excellent. we will be ordering more soon

Barbara

Thank you for your feedback! We're glad to hear that you're enjoying your Kobuk 1/4 Zip and are planning to order more. We truly appreciate your support and look forward to providing you with more excellent products. Have a great day!

-Steven D

J
JAMES M. (Calvert Heights, US)

The Expedition Kobuk is a fantastic cold weather garment..can be used as a base layer or mid-layer insulating piece..soft and very warm..a formidable weapon against the cold...

I'm so glad you like the Expedition Kobuk! It's a great piece of clothing that can be used for a variety of purposes and the 1/4 zip comes in handy when you need to cool down a bit but can't take off any layers. Thanks for the review!

M
Mike G. (Springfield, US)
Nice warm and comfortable

I wear this shirt all the time sometimes as just a base layer.
The fit is right on.
Merino wool never disappoints!!

Mike

Mike,

Thank you for the excellent review on the Kobuk expedition 1/4 zip. We are happy to hear that you are enjoying the fit and quality of your Minus33 gear!

Thank you for your support!

-Steven D

M
Mike H.H. (Marietta, US)
What a surprise

The thickness was amazing yet it fit without binding under my outer layers. Fit was just what I wanted not baggy or too tight. Cuffs were snug but not constrictive.
They will get the first cold weather workout from the end of November through December.I am confident they will pass the test.

Mike!
Thank you for taking the time to leave us a review! The Kobuk 1/4 Zip 100% Merino Wool is going to be a great insulator in the cold months!
Stay warm!
-Katie P.

K
Kevin D.D. (Philadelphia, US)
Expedition 1/4 zip

I used as a base layer in Northern Montana when the temps dropped to near zero and a foot of snow on the ground. Stayed warm and comfortable with another mod weight minus 33 wool layer and outer layers. I am very glad I purchased before going on this trip. Can't recommend enough.

Thank you for taking the time to leave us such a great review of our Expedition 1/4 zip merino wool shirt! We are happy to hear that our gear was there when you needed it to stay warm and comfortable.
Stay warm out there!
-Minus33

s
stephen s.s. (Spokane, US)
I thought it would be warmer

But I still like it very much and plan on wearing it in layers to keep warm in the house

Stephen,
Thank you for taking the time to leave us a review! We love that you have found a use despite it not being as warm as you expected.
-Minus33

D
Do y.h.a.p.t.o.t.1.z.e.i.o.c.A. (Glen Ellyn, US)
This 400gsm expedition is exactly what you are hoping it would be.

I've been switching over to wool and have tried ibex, smartwool, point6, and icebreaker gear in the 150-300 range. This 400gsm series is awesome. I ordered a medium and it would comfortably fit over a baselayer or could be worn as a baselayer just more of a loose fit (5'9" 150lb athletic). When you look at the material you'll understand why it's possible to dry it in a drier as it has a substantial heft and build quality to the knit. I'll probably still stick with air dry but I wouldn't worry if it got mixed in by accident. It's extremely soft yet robust for wool. The navy color looks far better than the picture as well and is a true navy in person. Of all the above brands the minus 33 definitely feels like it will hold up the longest by far and I look forward to getting additional wool products from them in the future. I wish they were available in store to try on which was the reason I delayed ordering so long as I prefer to test the products, but when forum posts from years back all the way to present still recommended minus 33 I figured it was worth a shot. Don't expect this to be thick like a fluffy hi pile fleece when it arrives, but do expect that it will be a nice soft and thick wool if you are more familiar with 250ish grade material.

Dan,

Thank you for taking the time to leave us such a great, detailed review! We greatly appreciate your feedback. It's so great to hear that you enjoy our 400gsm fabric so much. The garments that are made in this fabric are my personally favorites for when we get the coldest temperatures of the year. The Kobuk is one of my favorites as well because it is so versatile and can be worn as a base layer or over another base layer like you mentioned.

Thank you again for your feedback and for your support of Minus33.

-Steven D

I
Ivy W. (Constantia, US)
EXPEDITION KOBUK 1/4 ZIP

warm, soft use for motorcycling in up state ny ride in 40's

Hey Ivy!
Thank you for leaving us a review. We are happy to hear that the Kobuk kept you warm during your chilly ride!
-Minus33

M
Moose34d M. (Woburn, US)
But why not charcoal?

I've reached out to you many times...Why don't you offer this in charcoal grey. I'd buy 5 right now but noooo. Grey isnt important to you guys? Like... What?

As a small company, we are working on it. We thank you for your understanding and support!

Jeannie T.

T
Tom B. (Carver, US)
Kobuk 1/4 zip

Nice and warm for winter cycling.

Tom,

Happy to hear that our 100% Merino Wool Kobuk 1/4 Zip - Expedition keeps you warm for winter cycling. Thank you for taking the time to leave a review!

-Jeannie T.

A
Alan S. (Plymouth, US)
Finally!

…..found the perfect weight technical sweatshirt substitute. Great as a sweater, sweatshirt, mid layer and top layer in my favorite fabric….and is soft and worm. At 5’10” and 200lbs, the xl fits great and can looks good in the office too!

Alan,

We are pleased to hear that you have found the perfect weight technical sweatshirt substitute in our 100% Merino Wool Kobuk 1/4 Zip. It is one of my favorites.

Thank you for taking the time to leave a review!

-Jeannie T.

B
Brad R. (New London, US)
Great Base Layer

Best base heavy wool I have ever purchased. I work outside in Minnesota and I will not be taking this off. Thank you for
making such a great warm product.....FINALLY !!!

Brad,

It's great to hear that your 100% Merino Wool Kobuk Expedition 1/4 zip will be keeping you warm during the cold Minnesota winter this year! Thank you for choosing Minus33 and for leaving us a fantastic review.

Stay Warm,

-Steven D

S
Sean

Are you going to offer this in tall sizes again?

Minus33 Merino Wool Clothing

Currently we are not offering the tall sizes. I have placed this request to Product development team. please keep a look at our website for future product launches including sizes and colors.

Cory & Minus33 Customer Service Team.

R
Ray U.

What is the difference between this product and the EXPEDITION MEN'S WOOL 1/4 ZIP WILDERNESS, besides the presence of a chest pocket? Is one warmer than the other?

Minus33 Merino Wool Clothing

Ray,

Both 1/4 Zips are 100% Merino Wool with a mock neck and a zipper for venting. You will notice the difference in the feel of the two fabrics.

The fabric the Kobuk is made of is 400g/m2 and is a finer micron fiber at 18.5. The feel of this is soft and it sits nicely against the skin or with a thin layer under.
The Wilderness 1/4 Zip is slightly thinner at 380g/m2 and uses a 21 micron fiber.

Please let us know if you have any further questions.

-Steven D

THE MINUS33 DIFFERENCE

merino sheep durable comfortable natural resource organic wear cute animals farm sheering

SUSTAINABLE
& ETHICAL

- Woolmark Quality Standard

- OEKO-TEX Standard 100

- Responsible Wool Standard

- Earth-Conscious Packaging

SAR Kit Search and rescue base layers warm hiking boating mountains accident Minus33

GIVING BACK &

SAVING LIVES

We re-purpose & package gently worn & factory second base layers into SAR Warming Kits distributed FREE to first responders across the USA and Canada.

Two runners in merino tops jogging along a forest trail

SATISFACTION
Guarantee

- 30-Day Returns/Exchanges

- Free Shipping Over $50

- NH-USA Customer Service

- 2-Year Product Warranty*

hard working new hampshire ashland woolen mills history historic sock machine made in NH John Glidden Lawson Glidden Scribner Building

5TH GENERATION
FAMILY-OWNED

We are a 5th-generation family-owned business in New Hampshire with over a century of woolen textile manufacturing expertise. Quality without compromise.

merino sheep durable comfortable natural resource organic wear cute animals farm sheering

SUSTAINABLE
& ETHICAL

- Woolmark Quality Standard

- OEKO-TEX Standard 100

- Responsible Wool Standard

- Earth-Conscious Packaging

SAR Kit Search and rescue base layers warm hiking boating mountains accident Minus33

GIVING BACK &

SAVING LIVES

We re-purpose & package gently worn & factory second base layers into SAR Warming Kits distributed FREE to first responders across the USA and Canada.

Two runners in merino tops jogging along a forest trail

SATISFACTION
Guarantee

- 30-Day Returns/Exchanges

- Free Shipping Over $50

- NH-USA Customer Service

- 2-Year Product Warranty*

hard working new hampshire ashland woolen mills history historic sock machine made in NH John Glidden Lawson Glidden Scribner Building

5TH GENERATION
FAMILY-OWNED

We are a 5th-generation family-owned business in New Hampshire with over a century of woolen textile manufacturing expertise. Quality without compromise.

Kobuk Merino Wool 1/4 Zip | Heavyweight Top