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

Midweight
Isolation Men's 1/4 Zip

100% Merino Wool

Regular price$99.99
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Shipping calculated at checkout.
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.

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Our Guarantee
man wearing midweight crew long sleeve shirt man night hiking wearing midweight merino wool quarter zip

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
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

two people sitting next to a river wearing 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 tshirt drying in the sun

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.

woman hiking with her dog crossing a river

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.

first responder at a fire

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.

woman doing yoga on top of a mountain in merino wool base layers

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+.

Australian merino wool sheep

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

Total Easy Care (TEC) Merino apparel is designed for today's busy lifestyle. Total Easy Care Merino garments are all machine-washable, and are suitable for tumble drying.

Even after frequent laundering they retain an 'as new' appearance. They won't shrink, lose their shape, fade or color-bleed. They remain soft and comfortable for the life of the garment.

Customer Reviews

Based on 101 reviews
93%
(94)
4%
(4)
2%
(2)
1%
(1)
0%
(0)
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.

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.