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Men's, Fitted, Heavyweight Thermal Top. The ultimate climate-control base layer.

Our fastest drying gear? Check. 37.5® Technology that's scientifically proven to give you more stamina? Check. Add to your shopping basket now? Triple check.
  • 8-ounce, 60% Polyester/ 33% Cocona 37.5 Technology/ 7% Spandex
  • FastDry® with 37.5® Technology makes this our fastest drying gear
  • Odor-fighting tech never washes out
  • Enhanced comfort with smooth flatlock seams and tagless neck label
  • For a full base layer option, shop the coordinating bottom here
  • Model height: 6'2"; Chest size: 40.5"; Wearing size M
  • Imported

For over 125 years, Carhartt, Inc. has been committed to offering the finest workwear products and customer service available. We stand behind the quality, craftsmanship, and performance of all our products. We use only the finest materials and apply strict quality control standards to each and every garment and accessory that we sell. Our goal is to ensure your satisfaction with each purchase and provide you the best possible service for years to come.

Since all apparel has an expected service life, this commitment does not cover damage caused by normal wear and tear (including zippers and other hardware), misuse, neglect, or obvious abuse of the garment. Carhartt, Inc. assumes no liability for garments that have had alterations, embroidery, or other ornamentation added to the garment.

Please contact our customer service team for all warranty questions:

Contact Us

40% OFF

Carhartt Base Force Extremes® Super-Cold Weather Crewneck

$29.99 – $31.79 $49.99 – $52.99

150 - 159 LOYALTY POINTS

Style #102350
40% OFF
COLOR: Black


There are no Carhartt Company stores or Great Partner stores in your area with this item.
Fit & Technology
    Force icon
    Base Force
    Base Force was designed to keep you warm enough to handle a 12-hour work day.


    Welcome to the warm world of Carhartt Base Force® Thermals. Available in 4 different weights: Lightweight, Midweight, Heavyweight Synthetic, and Heavyweight Cotton. Base Force was built for those who get up and go when the frozen wind blows. They’re sweat-wicking and stain-busting to help you own the cold and stay warm and dry in tough conditions.

OUR COMMITMENT

For over 125 years, Carhartt, Inc. has been committed to offering the finest workwear products and customer service available. We stand behind the quality, craftsmanship, and performance of all our products. We use only the finest materials and apply strict quality control standards to each and every garment and accessory that we sell. Our goal is to ensure your satisfaction with each purchase and provide you the best possible service for years to come.

Since all apparel has an expected service life, this commitment does not cover damage caused by normal wear and tear (including zippers and other hardware), misuse, neglect, or obvious abuse of the garment. Carhartt, Inc. assumes no liability for garments that have had alterations, embroidery, or other ornamentation added to the garment.

Please contact our customer service team for all warranty questions:

Contact Us

What People are saying

Review Summary

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4.9 / 5.0
32 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
30
1
1
0
0
Appearance
4.9 / 5
Durability
4.9 / 5
Quality
4.9 / 5
Comfort
4.9 / 5
Fit
Runs Small
 
Runs Large
Fit
Runs Small
 
Runs Large
Appearance
5 / 5
Durability
5 / 5
Quality
5 / 5
Comfort
5 / 5
The warmest gear available. Would recommend to anyone that needs to be in the cold!
This review was collected as part of a promotion
December 26, 2018
Pittsburgh, PA
Age:
45-54
Gender:
Female
Fit
Runs Small
 
Runs Large
Durability
5 / 5
Quality
5 / 5
Comfort
5 / 5
Great for warmth!
Bought to wear at Steeler games and I have never been disappointed
December 21, 2018
Pittsburgh , PA
Purchased
1 month ago
Age:
35-44
Gender:
Female
Fit
Runs Small
 
Runs Large
Appearance
5 / 5
Quality
5 / 5
Comfort
5 / 5
Great Thernal
Very warm. I like the extra 2 inches provided in the tall size.
This review was collected as part of a promotion
December 21, 2018
Hammond, IN
Purchased
1 month ago
Age:
45-54
Gender:
Male
Fit
Runs Small
 
Runs Large
Appearance
5 / 5
Durability
5 / 5
Quality
5 / 5
Comfort
5 / 5
Exactly what I wanted - warm and lightweight. Should be an excellent first layer for cold winter days.
December 17, 2018
Morristown, NJ
Purchased
1 month ago
Age:
65+
Gender:
Male
Fit
Runs Small
 
Runs Large
Appearance
5 / 5
Durability
5 / 5
Quality
5 / 5
Comfort
5 / 5
Warm and comfortable!
The real test is in a few days. Going hunting in the mountains of Utah! I have worn them in my temps of 31 degrees and they are warm!
December 10, 2018
Provo, UT
Purchased
1 month ago
Age:
45-54
Gender:
Female
Fit
Runs Small
 
Runs Large
Appearance
5 / 5
Durability
5 / 5
Quality
5 / 5
Comfort
5 / 5
Fantastic product.
December 9, 2018
Purchased
1 month ago
Fit
Runs Small
 
Runs Large
Appearance
5 / 5
Durability
5 / 5
Quality
5 / 5
Comfort
5 / 5
Can’t complain it keeps me warm
December 9, 2018
Purchased
1 month ago
Fit
Runs Small
 
Runs Large
Appearance
5 / 5
Durability
5 / 5
Quality
5 / 5
Comfort
5 / 5
Perfect for anyone who works out in the EXTREME cold!!
This is the most warmest crew he has ever worn. Its perfect. He had to work outside in 20 degree weather and this kept him warm!
This review was collected as part of a promotion
December 5, 2018
Wallkill, NY
Purchased
1 month ago
Age:
55-64
Gender:
Male
Fit
Runs Small
 
Runs Large
Appearance
5 / 5
Durability
5 / 5
Quality
5 / 5
Comfort
5 / 5
Very good product
I got the top and bottom for my base layer for hunting. On the way out to my stand it was about 25 degrees. These things are so warm I had to unbutton my jacket. Once I was in my stand they kept me very warm. If you do anything in extreme cold conditions then you will want these. Great product.
November 29, 2018
PA
Purchased
2 months ago
Age:
35-44
Gender:
Male
Fit
Runs Small
 
Runs Large
Appearance
5 / 5
Durability
5 / 5
Quality
4 / 5
Comfort
5 / 5
Warm but not Extreme
It’s warm but not Extreme “Super-cold” warm. Honestly doesn’t seem any different than any other base layer I own. When the wind blows I’m still froze.
November 27, 2018
Weirton, WV
Age:
25-34
Gender:
Male
Response from Carhartt
Thank you for your feedback. Please contact us at 1 800 833 3118 if we can provide you with any assistance.
November 28, 2018
Therese S
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 6 questions Browse 6 questions and 10 answers
My son is 6' 6" . Is the tall long enough? He likes the shirt to stay tucked in as he works outdoors all winter.
Becky on Jan 6, 2019
What’s the best thermal for -40 f weather?
A shopper on Nov 12, 2018
BEST ANSWER: We do not temperature rate our garments since everyone has a different threshold for what they consider to be warm.
Is there a 4x tall size available in any of your thermal shirts?
A shopper on Feb 1, 2018
BEST ANSWER: Not at this time. However, we'll be glad to share your interest with Product Design.
Is this your warmest base layer or would the 100% cotton be the warmest?
A shopper on Dec 18, 2016
Carhartt Base Force Extremes Super-Cold Weather Crewneck
Carhartt Base Force Extremes Super-Cold Weather Crewneck
Carhartt Base Force Cotton Super-Cold Weather Crewneck Top
Carhartt Base Force Cotton Super-Cold Weather Crewneck Top
BEST ANSWER: Both styles are just as warm and are the warmest we offer.
I must have 100 percent cotton thermal underwear
no, I work on live electric and must cotton thermals. Do you sell them ?
Ross H on Oct 24, 2016
BEST ANSWER: Yes, we do. The following base layer top and bottom are 100% cotton. Style #100639 - http://www.carhartt.com/products/Carhartt-Force-Cotton-Super-Cold-Weather-Crewneck-Top-100639 and style #100640 - http://www.carhartt.com/products/Carhartt-Force-Cotton-Super-Cold-Weather-Bottom-100640.
What is the source of this product?
Anna C Staff on Jun 1, 0016
BEST ANSWER: This product is imported.