Carhartt Force Midweight Classic Thermal Base Layer Review

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Carhartt Force Midweight Classic Thermal Base Layer Review
Our Verdict
Functionality - Keeping you warm
Design Features
Size options
The Good
11 size options, including 4 tall for longer inseam
Includes FastDry and Rugged Flex technologies
Has a non-chemical anti-odor treatment added into the fabric
Keeps you comfortable and warm throughout any outdoor activities
Very flexible, perfect for those doing bending and stretching tasks
The Not So Good
Only two colors available

Many anglers do a lot of their fishing sitting down. If you rove around a lot then keeping warm is a little easier. As a winter carp angler, I need thermal pants to keep me comfortable and retain my body heat whilst waiting through the cold nights for my bite alarms to go off!

Having a good set of fishing pants will keep your legs and lower body much warmer if you are not a mobile fisherman.

In addition to a thermal fishing base layer shirt, you are going to need thermal base layer pants. A base layer bottom is going to act as that all-important second skin.

So join me, as I take a deep dive into the Carhartt Men’s Force Midweight Classic Thermal Base Layer Pants.

Carhartt Men’s Force Midweight Classic Thermal Base Layer – My Best Overall Pick!

These fully imported (from Cambodia) base layer pants from Carhartt are made of 100 percent polyester. These are perfect for those below-freezing days. It doesn’t matter if it’s raining, snowing, or blowing a gale, these pants are going to keep you extremely warm and comfortable.

The FastDry and Rugged Flex technologies incorporated in the design, are just what you need for winter fishing. The flexible nature of these pants is crucial for moving around and constantly getting up and down doing all the casting, baiting up, and landing fish.

For a very affordable price, you’re getting a great deal. 

It is easy to pull on these base layer bottoms, and they won’t slip down due to the elastic waistband which is sewn into the top of the pants. For those of you that have bought thermal base layer pants before and feel uncomfortable in the fly area, then these will be perfect. At the fly area, Carhartt has a smooth seam area which eliminates chafing.

I love the waffle knit concept, which retains heat well and any sweat that you have will dry wick away very fast, leaving you a drier feeling. Another great feature is that these did not shrink after I did multiple washes, you can wash them in your standard wash. 

Lastly, as with all good thermal base wear, there is no tag or label anywhere inside the pants.

The Carhartt base layer has a non-chemical anti-odor treatment added into the fabric. It is safe to use and is a sustainable odor management technology that has earned Eco Passport by Oeko-Tex® certification and bluesign® blue certification


  • Waffle Knit 
  • Machine Wash
  • Flatlock Seams
  • Working Fly
  • Lightweight – Weighs only 200grms or 6 oz
  • An awesome 11 different size choices


  • Can be too warm for moderate days 
  • Only two color options – Black and Navy

Always, check the option that you require, as there are a few different styles:

  • Carhartt Men’s Base Force Midweight Classic bottoms have a working fly (Style# MBL115) – My recommendation
  • Carhartt Men’s Base Force base layer bottoms with contoured front with fly include the following styles:
    • MBL121 Heavyweight Poly-Wool, 
    • MBL112-Heavyweight,
    • MBL149-100% Cotton Midweight Classic, 
    • MBL106-Midweight Tech,
    • MBL103-Lightweight.

Lastly, there are 4 tall sizes, make sure you follow the size chart image. The tall sizes have an inseam of 2” longer than the standard version.

If you are looking for the women’s option, check out the Carhartt Women’s Force Midweight Tech Thermal Base Layer Pant here!

Final Thoughts

I have worn these Carhartt base layer pants fishing in the winter for several years. You don’t need specific fishing thermal pants for the cold weather, these are generic thermal pants that will work well for going fishing, or for any other outdoor activities during those freezing winter months.

I hope you enjoyed reading this review on my best pick for the Thermal Base Layer fishing pants. Why not check out my other in-depth articles on all the best cold weather fishing clothing and accessories here! These articles cover gloves, outer pants, and every type of clothing you need.