A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_burgundy
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_burgundy
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_burgundy
A five-star review reads, "Cotton, polyester forget it. These shirts are so comfortable and are able to keep you warm while being able to breathe." #color_burgundy
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_navy
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_navy
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_navy
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_navy
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_forest-green
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_forest-green
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_forest-green
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_forest-green
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_black
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_black
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_black
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_desert-sand
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_desert-sand
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_desert-sand
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_desert-sand
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_desert-sand
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_desert-sand
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_true-red
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_true-red
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_true-red
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_true-red
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_true-red
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_olive-drab-green
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_olive-drab-green
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_olive-drab-green
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_olive-drab-green
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_olive-drab-green
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_olive-drab-green
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_olive-drab-green
#color_tan-499
#color_tan-499
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_tan-499
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_tan-499
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_tan-499
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_tan-499
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_tan-499
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_charcoal-gray
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_charcoal-gray
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_charcoal-gray
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_charcoal-gray
In this video, a man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_charcoal-gray
A man models a super soft, long sleeved merino wool thermal base layer crew. This top makes for a perfect first layer on a winter hike, or a nice casual wear on the chilly days of autumn and spring. #color_mossy-oak-country-roots
 #color_mossy-oak-country-roots
 #color_mossy-oak-country-roots

Midweight Men's Thermal Base Layer Crew 100% Merino Wool

Regular price$79.99
/
Color
Length
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.

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 187 reviews
93%
(174)
3%
(5)
4%
(7)
0%
(0)
1%
(1)
A
Anonymous (Plymouth, US)
Height: 6' 1"
Weight: 160
Primary Activity: Snowsports
Warm & Breathable

Kept me warm while back-country skiing but allowed sweat to wick away. I used it as a single layer going up and with a shell going down & was comfy all day long!

Thank you so much for taking the time to leave a review for our Midweight Chocorua Men's Crew 100% Merino Wool. We are thrilled to hear that it kept you warm while back-country skiing and allowed sweat to wick away. We are glad that it provided you with comfort all day long, whether used as a single layer or with a shell. We hope it continues to serve you well on your outdoor adventures. Thanks again for choosing our product!

Happy Adventuring!
Sierra S
Minus33

T
Teddy (Madison, US)
Charcoal Gray / Regular / XL
Excellent quality… definitely warm!

We ordered the mid weights for both my wife and I and found they were perfect for layering in harsher temps, but preferred the lightweights for average temps during the winter in Europe. Suggest you purchase both and have options, depending on the day.

Hi Teddy,
Thank you for your review! We're glad to hear that you are enjoying the excellent quality and warmth of our Midweight Chocorua Men's Crew. We understand the importance of layering in harsh temperatures, and we're happy to hear that our product has met your needs. We also appreciate your suggestion of purchasing both midweight and lightweight options for different temperature ranges. Thank you for choosing our product and for sharing your experience with us. Stay warm and have a great day!
Kindly,
~Sue

K
Ken F. (Chicago, US)
Charcoal Gray / Regular / XL
Comfortable and Warm

This is by far my favorite shirt. So comfortable, soft, and warm without being hot. And it looks like a nice sweater! I wear it as a base layer hiking in cold weather but I also wear it around the house, out to dinner, casual dinner parties. Basically as often as I can. If the weather is below 50-55, this thing is perfect on it's own or as a base layer when it's colder. Love this thing. I am 6'3, with long arms and a thin body type, got an XL and it fits great, the sleeves fit perfect. Will get more.

Hi Ken! Thank you for taking the time to share your positive experience with our Chocorua Men's Crew. We're thrilled to hear that it's become your favorite shirt and that it's versatile enough to wear on various occasions. We're glad to know that it keeps you comfortable, warm, and stylish at the same time. Thank you for mentioning your sizing and fit as well, as this can be helpful for other customers. We appreciate your support and we hope to see you again soon for more of our products. Happy Spring!
Kindly,
~Sue

D
Daniel B (Pine City, US)
Black / Regular / XL
Nice shirt

This is a nice mid weight base layer. It fits well, is comfortable and 100% merino. Plus minus 33 stuff costs less than competitors without sacrificing quality.

Hi there!

Thank you for taking the time to leave a review for our Midweight - Chocorua Men's Crew! We're so happy to hear that you are enjoying the fit and comfort of this base layer, as well as the fact that it's made with 100% merino wool. We always strive to provide high-quality products at a competitive price, and we're glad to hear that you feel we have achieved that. Thank you again for your feedback, and happy adventuring!