Woolverino Men&
Woolverino Men&
Woolverino Men&
Woolverino Men&
Close-up front view of a man wearing an ash gray Woolverino micro weight merino wool quarter-zip active top, showing the stand collar, partial zipper, shoulder seams, fitted sleeves, and smooth chest
Side action view of a man wearing a Woolverino micro weight merino wool quarter-zip mid layer, showing the raised collar, chest zipper, fitted long sleeves, athletic torso, and hip-length hem
Woolverino Men&
Woolverino Men&
Woolverino Men&
Woolverino Men&
Woolverino Men&
Woolverino Men&
Woolverino Men&

Microweight 145 Men's Wool 1/4 Zip Woolverino

Regular price$94.99
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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)
XS 33-35 24-27 30-31 25.5-26.5 25-27
S 35-38 28-30 31-32 26.5-27.5 28-30
M 39-41 31-33 32-33 27.5-28.5 29-32
L 42-45 34-36 33-34 28.5-29.5 32-34
XL 46-48 37-40 34-35 29.5-30.5 32-35
XXL 49-52 41-44 35-36 30.5-31.5 34-35
XXXL 52-54 45-49 36-37 31.5-32.5 34-36


Men's Big and Tall Clothing Size Chart


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

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.


Shop Men's Clothing Shop Men's Big and Tall Clothing




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's 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.

Woolmark Certification

This certified product meets Woolmark standards, ensuring exceptional quality, reliability, and performance.

16 CFR Part 1610 | Standard for the Flammability of Clothing Textiles

Rated Class 1 for flammability safety under 16 CFR Part 1610, with full ignition resistance and DNI results across all tests.

Our Guarantee

runners wearing minus33 microweight merino sun hoodie and merino wool pullover and wool sweater

MICROWEIGHT MERINO WOOL

  • 145 g/m
  • 84% Merino Wool, 13% Nylon, 4% Spandex 
  • Tested safe against over 1000 harmful chemicals including PFAS
  • Machine Wash & Dry
  • UPF 20

Our microweight Merino wool is our lightest and most breathable fabric. It’s designed for high-output activities in warm to hot conditions. Perfect for hiking, running, biking, and everyday wear when you need sun protection and moisture management without extra bulk. Our Microweight fabric also works great as a base layer in spring and fall. You can learn more about our different Merino fabric weights here.

Temperature (°F)

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

Activity Level

Activity Icon
LOW
MEDIUM
HIGH
  • Perfect—soft, thin, ideal sleeve length. Temperature regulation is impressive.
  • Most comfortable lightweight shirt made. I could live in this shirt 24/7.
  • Awesome base layer that I take everywhere. Can be worn all year long.
  • 5 stars: 33 (92%)
  • 4 stars: 2 (6%)
  • 3 stars: 1 (3%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
Q
Quentin F. (Florham Park, US)
Primary Activity: Casual / Lifestyle
Travel MUST - The Ultimate Travel & Transit Layer

I wore this as a base layer under a dress shirt for a round-trip ski journey from NJ to Switzerland, involving flights, multiple train connections, and a long walk to the hotel. At every stage, it was perfect—soft, thin, and with an ideal sleeve and tail length.

The temperature regulation is impressive. Zipped up, it kept me warm; zipped down, it cooled me instantly to "meet the moment." It didn't retain much sweat, and what it did catch dried almost immediately. The real test was the trip home: a blizzard had dumped 8 inches of snow, taxis weren't running, and we had to haul a 50lb ski bag by its handles for a mile to the station, in addition to the luggage on our backs. I wore only this layer, a dress shirt, and a soft-shell vest. By the time we reached the train, I was bone dry and very comfortable waiting on the train platform in the snow.

After three more train transfers, check in, and the flight back, I landed in 70-degree NJ weather. I ditched the vest, went through immigration, baggage claim, and waited in full sun for my ride; I didn't break a single bead of sweat. The light grey color is versatile and looks sharp and clean. My only minor note is that the collar doesn't stand on its own when unzipped, but if you’re wearing it under a collared shirt, it rests perfectly for a dressy look. I only wish they made this exact weight in a non-zip version for layering while skiing!

S
Steven H. (Pine City, US)
Ash Gray / L
Height: 6' 1""
Weight: 170
Primary Activity: Running
Wore it everyday on my Alaskan cruise and it kept

Wore it everyday on my Alaskan cruise and it kept me warm and it never smelled.

Hi there! We're so glad to hear that our Microweight 1/4 Zip Woolverino was able to keep you warm and fresh during your Alaskan cruise. We hope you had a fantastic time and thank you for choosing our product. Happy travels!

A
Arthur H. (South Portland, US)
Ash Gray / XL
Height: 5'9"
Weight: 217 lbs.
Primary Activity: Hiking
Microweight Woolverino = Tops

If there's a better, more comfortable lightweight shirt made, let me know. I could live in this shirt 24/7. No, it's not inexpensive, but if you want the absolute best, shop no further.

Thank you so much for your amazing review! We’re so glad to hear the shirt has become a go-to for you- comfort like that is exactly what we aim for. We truly appreciate your support and recommendation!

J
Jonathan L. (San Diego, US)
Perfect for backpacking

Bought this for backpacking 4 days in the grand canyon. This was perfect for keeping my cool in 90F+ heat while also being odor resistant. The sizing was a bit tough. Im usually both a S/M but this ran larger so I had to return the size S and order a size M.

Thank you for taking the time to leave a review for our Microweight - Men's Wool 1/4 Zip Woolverino. We're glad to hear that it was perfect for your backpacking trip in the Grand Canyon and that it kept you cool in the hot weather. We apologize for any inconvenience with the sizing but we're happy to hear that you were able to exchange for the right size. We hope you continue to enjoy our product for all your future adventures. Happy exploring!
Sierra S

M
Mark B. (Alburg, US)
Ash Gray / XL

Great product!

Thank you Mark for taking the time out of your day to review our Microweight Men's Wool 1/4 Zip Woolverino! We are thrilled to hear you are enjojying this garnemnt. Happy Adventuring!

Best,
Sierra S

G
Greg B. (Andover, US)
Ash Gray / L
The best micro-weight 1/4 zip!

During the winter I purchased a midweight Marino wool quarter zip for skiing. It came in very handy this cold winter and I loved it. Love the fit and the warmth! So I tried the micro weight quarter zip for the spring warmer weather. At first, I thought it was a little long, but I soon changed my mind and have been wearing it regularly! It is definitely micro weight but surprisingly warm and well crafted. I love Minus33!

Hey Greg!

Thank you for taking the time to leave a review for our Micro Weight 1/4 Zip Woolverino. We are thrilled to hear that you are enjoying the fit, warmth, and craftsmanship of our product. We hope it continues to serve you well during the spring weather. Thank you for choosing Minus33, appreciate your support.

Kindly,

~Sue

S
Sam D. (Miami, US)
Like the shirt, hate the collar.

I bought two, the hoodie and the regular 3/4 zip. Good fit and function, but I really hate the collar. The zipper comes up too high and there're really no practical way to leave it partially unzipped. It stands up and waves like a flag if it's not zipped. I may look into things like velcro stays or even shortening the zipper to make it more comfortable.

Hi Sam! Thank you for taking the time to leave a review. We're glad to hear that you like the fit and function of our Micro Weight - Men's Wool 1/4 Zip Woolverino. We understand your concerns about the collar and we appreciate your feedback. We'll definitely take it into consideration for future designs. In the meantime, some customers have found success using velcro stays to keep the collar down or shortening the zipper for a more comfortable fit. We hope this helps! Thank you for choosing our product.
Have a good day
~Sue

J
Jeff (Franklin, US)
Ash Gray / M
GREAT VALUE

Best in class quality merino and some of the best prices around. Always my first choice.

Hi Jeff, thank you for your kind words and for choosing Minus33. We take pride in offering high-quality merino products at competitive prices. We appreciate your support and hope to continue being your first choice. Have a great day!
~Sue

K
Kathryn L. (Danbury, US)
Best Choice for Warm Body Person

For those who sleep with minimal covers and don't need the heaviest coat, this is the choice. I purchased these for 2 of my "warm body" adult sons, and they are perfect for base layer. Wool, but comfortable and not over heating them

Kathryn,

Thank you for taking the time to leave us your review. We're glad to hear that the Woolverino Micro Weight 1/4 Zip has been a good option for your sons!

Thank you for supporting Minus33!

-Steven D

M
Mark R.R. (Monroe, US)
Mixed feelings review

I love my Woolverino not only for hiking but casual wear but you have to treat them gently. The underside of my forearms on both sleeves wore right through in a year. This time I’m not going to put them in the dryer and see if that makes a difference.Minus33 has great merino, but merino must be treated gently. It’s well worth the extra attention.

Mark,

Thank you for taking the time to leave us your honest review. We greatly appreciate your feedback. We design our products to be able to be machine washed and dried using the Total Easy Care process. However, we do have specific care instructions on how todo so on our website. This will ensure that your merino wool garments will last as long as possible.

Please let us know if you have any questions.

Best,

-Steven D

R
Robert F. (Honolulu, US)
Awesome

Fits great. Very light weight so perfect for active layer. Very soft comfortable material. Just what i needed for ski mountaineering.

Bikyak,

Thank you for the review! We're glad you're enjoying the Woolverino Men's Wool 1/4 zip - micro weight. It's a great fit and lightweight for active use, and the soft, comfortable fabric is perfect for cold weather skiing.

Jeannie T.

C
Christopher D. (Amsterdam, US)
Fantastic!

Unreal how comfortable this wool is. Perfect for tracking big woods whitetails!

Mark,

Thank you for taking the time to let everyone know how comfortable the Woolverino Men's Wool 1/4 Zip - Micro Weight is!

-Katie P.

J
James H. (Hood River, US)

Love it, good fit, zip neck gives wide range of ventilation!

James,

We are glad to hear how pleased you are with your Minus33 Woolverino 1/4 zip. Thank you for the great review!

-Melinda W

G
George N. (Fort Collins, US)
Micro Weight

Great for summer hikes.

George,

Thank you for the great review, stay safe hiking!

-Melinda W.

R
Robin M. (Woodbridge, CA)

Woolverino Men's Wool 1/4 Zip - Micro Weight

Robin,

Thank you for the fantastic review!

-Steven D

S
Steve T. (Seattle, US)

Great layer for bike commute and bike touring- the zip is key for being able to manage your temperature. Not super warm by itself but that’s not what it’s for. I bike commute 5 days a week, including a serious climb, and it’s not smelly at all by Friday.

C
Carrie B. (Malden, US)
Perfect for layering

My husband loves his!

Carrie,

Thank you for the great review! We hope your husband stays comfy while wearing his Minus33 1/4 Zip.

-Melinda W.

A
Alan S. (Holderness, US)
Great universal piece

Quickly becoming my favorite piece. I am 5'10, 225 and xl fits great. I like that it is not skin tight and will be worn all year. After wearing minus33 it is hard to put wear anything else

Alan,

Thanks for the great review! We are pleased to hear that you are enjoying you Woolverino Men's 1/4 Zip Hoodie. Keep warm!

-Melinda W.

T
Terry F. (Colorado Springs, US)
Great Fit

I was in need of another micro weight shirt and this fit that need.

Hi Terry.

Thank you for the great review! Happy to hear you how much you like your shirt.

Jeannie T.

J
Jeff P. (Chandler, US)
Fantastic!

I love 1/4 zips and this one rocks! It fits great (I'm 5' 9", 150 lbs, size Med.). The only thing I would add to this design is thumb holes.

Jeff, thank you for taking the time to leave a review, we've forwarded your thoughts to our product development team! -Felicia W.

R
Robert R. (Belleville, US)
Good material makes a good product.

My only criticism is "made in china".

Robert, thank you for taking the time to leave a review. We appreciate your insight and we're always looking for ways to improve so we've forwarded your comments along to our product development team. If you're looking for entirely US made products, please take a look at out Mountain Heritage sock collection! These are made right here in New Hampshire. -Felicia W.

J
Jim G. (Fort Lauderdale, US)
lightweight shirt

very comfortable great fit can almost where it year round

S
Shawn C. (Grafton, US)
Woolverino Men's Micro Wool 1/4 zip

The size is a great fit. The weight of the Woolverino Micro wool is awesome- vey light and functional. This can be worn all year long, great for those cool morning rides and as it warms up just open it up a bit and I am fine. An awesome base layer that I take everywhere with me. If you do any type of activities outdoors you need this top.

Shawn, we're so glad that you're enjoying your top. Thanks so much for taking the time to let us know. Comments like this let our product development team know that they're doing great. Stay warm! -Felicia W.

P
Patrick R. (Albany, US)
My go-to!!! Most treasured shirt.

I'm a regular back country skier and mountain biker in the Adirondacks. I don't leave home with out my Minus33 1/4 Zip. I own several of them. Just last week I was mountain biking on the Barkeater Trails when I got caught in a 45deg rain. No worries, I had my 1/4 zip on. The soft merino wool is 2nd to none. It will keep you warm even when wet. It's also light enough to breath. And not to get too personal, it doesn't smell like synthetics. I also have very fair Irish skin. All my Irish sweaters are too itchy for me to wear. The Merino Wool from Minus33 doesn't itch at all.

M
Mark D.E. (Columbus, US)
Great product

Great for fall and spring!

Men's Microweight Merino Wool 1/4 Zip