A man models the microweight long sleeved merino wool base layer crew neck top
Man wearing a black microweight merino crew, back view
A man models the microweight long sleeved merino wool base layer crew neck top, side view
A man models the microweight long sleeved merino wool base layer crew neck top
A man models the microweight long sleeved merino wool base layer crew neck top, back view
A man models the microweight long sleeved merino wool base layer crew neck top, side view
A man models the microweight long sleeved merino wool base layer crew neck top
A man models the microweight long sleeved merino wool base layer crew neck top, back view
A man models the microweight long sleeved merino wool base layer crew neck top, side view

Microweight 145 Men's Wool Long Sleeve Woolverino

Regular price$79.99
/
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)
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
  • 5 stars: 3 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
J
Jimmy Flores (Tujunga, US)
Olive Drab Green / XL
Love this shirt

Love this shirt. Kept me nice and cool on a day hike in Southern California. Can’t wait to buy more.

M
Martin Camacho (Houston, US)
Olive Drab Green / M
Height: 5'7
Weight: 145lbs
Primary Activity: Workwear
I work for the railroad so I spend a lot of time

I work for the railroad so I spend a lot of time outside and it was amazing didn't know I had a shirt on

Thank you so much for taking the time to share your review!

Working out on the railroad is demanding work, and facing the elements day in and day out takes real dedication. We’re thrilled to hear that our Microweight Men's Wool Long Sleeve Shirt Woolverino is performing so well for you on the job!

We specifically designed our 145g/m² Woolverino blend to combine the natural temperature regulation, breathability, and moisture-wicking power of Merino wool with added core-spun durability. Hearing that it provides incredible, lightweight comfort during long hours outdoors means the world to us.

If you have not tried our our socks yet, I highly suggest that you do. They are great year round and help keep you cool in the summer and warm in the winter due to the natural wicking wool fibers.

Thank you for all your hard work and for trusting Minus33 to keep you comfortable out on the rails. Stay safe out there!

A
Allan (Secaucus, US)
Height: 6'0"
Weight: 190lbs
Primary Activity: Hiking
Great shirt, easy buy, some feedback/suggestions

I have been a big fan of the "Woolverino" T-shirts for hiking, gym training, running, etc. for a while now, so I'm thrilled that they are making a long sleeve tee in the same fabric. I have no major complaints with the garment. The fit is slim, which I like as a performance layer garment (same as the short sleeve tees), but the fabric is so soft, comfortable, and breathable that it makes me wish Minus33 would make more everyday shirts out of it, like another version of this shirt with looser-fit sleeves before the cuffs to allow for that extra comfort and relaxed drape. I also do wish there were better color options, like a deep espresso brown color of this fabric, and maybe a darker charcoal grey.

Hi Allan, thank you so much for your detailed feedback! We're thrilled to hear you love the Microweight Wool Long Sleeve Shirt and appreciate your suggestions for fit and color options. We'll pass your ideas along to our team. Thanks for being a loyal fan and for sharing your thoughtful input! Thank you so much for your continued support and for taking the time to share your feedback with us! We're thrilled to hear that you’re enjoying the new long sleeve version of our Woolverino fabric just as much as the short sleeve tees.

We really appreciate your detailed suggestions regarding everyday fit preferences—like looser sleeves before the cuffs—as well as your color recommendations for deep espresso brown and darker charcoal grey. Input like yours is incredibly valuable as our product development team works on future designs and colorways!

Thanks again for being a fan of Minus33, and happy trails on your upcoming hikes!

Men's Merino Wool T-shirt | Micro Weight Woolverino