Thermajohn Thermal Base Layer: Best Cold Weather Fishing Shirt Review

Disclosure: Some posts contain affiliate links, which earn us a commission if you make a purchase through them. Positive Fishing © participates in various affiliate networks including the Amazon Services LLC Associates Program.

Thermajohn base layer fishing shirt
Thermajohn Thermal Base Layer: Best Cold Weather Fishing Shirt Review
Our Verdict
The Thermajohn thermal compression base layer shirts are a great affordable choice for cold weather pursuits. It is ideal for fishing as it is fleece lined, giving the heat retention anglers need when fishing. It can be worn under a hoodie or your fishing jacket and still enables great movement.
Quality of Material
Value For Money
Color range availability
Size range options
The Good
Has all the features that you need in a base layer
Wide range of color options
Full selection of eight different sizes
Stretches and molds with your body shape nicely
Affordable compared to others in the market
The Not So Good
Not the best quality but well worth the money
Check Price

As the weather closes in for the winter, a quality insulating base layer is one of the key parts of keeping warm when you are out fishing in the cold weather. 

A base layer top acts as a “second skin”; this insulating layer gives your upper body an extra layer between you and the cold.

So join me as I take a deep dive into the Thermajohn base layer thermal shirt.

Thermajohn Thermal Base Layer Cold Weather Shirt – My Best Overall Pick!

For your insulating layer, the Thermajohn long-sleeve base layer is perfect! It’s made of 92% polyester and 8% spandex and will keep all of the moisture off your body and keep you out fishing for as long as you would like! 

As you know, many of my picks for the best fishing clothing for the cold weather, I rarely pick those high-priced range commercial name items. So the same applies to base layers! 

The Thermajohn base layer fishing shirt is not only a great quality product, but it’s very competitively priced. 

You’re getting a wonderful insulating shirt! While it’s not overly thick, it does the job and will keep you out on the water for an extended amount of time. It’s a tight-fitting but breathable material and provides that sweat-wicking capability, insulation, and temperature regulation that are the basic needs of a good thermal layer shirt.

When fishing in cold weather, your base layer has to allow flexible movement. The Thermjohn should be sized to give you a body-hugging fit, but you will find that when you cast, reach out for bait, tend to the fish, etc., you’ll still have the full range of motion and freedom to move without any restrictions.

What I like about this inner base layer shirt is the great ability of heat retention coupled with the soft fleece lining layer. It never fails to keep me warm and, at the same time, feeling comfortable. Thermajohn has the additional foresight not to place a tag on the inner collar, which means you don’t have the “itchy” feeling from the label material.

They are available in eight sizes and five colors, charcoal, grey, black, hunter green, and navy. My personal choice of color is hunter green! 

If you are looking for the ladies’ version of this shirt, check out the Thermajane thermal shirts for the winter. The women’s options come in even more color options and eight size options.

Finally, I love the price tag! It’s not the cheapest nor overpriced, but it’s a practical, good quality, and a great value-for-money base layer that is perfect for those winter fishing days.


  • Inner brushed fleece 
  • Crew top design 
  • Stretchable 
  • Moisture-wicking control technology
  • Super heat retention quality
  • Affordable
  • Eight sizes available from X-Small to 4X-Large
  • Five Color choices
  • Machine washable 


  • Can shrink in the wash
  • The sizing can be a little small

This review focused on my best choice for cold weather base layer shirts; if you are looking for a fishing shirt for sun protection and normal weather, check out my in-depth article on the best fishing guide shirts.

Final Thoughts

Without a doubt, this Thermajohn base layer fits the bill perfectly for cold-weather fishing or any other outdoor activities during the winter months.

I hope you enjoyed reading this Thermajohn thermal base layer shirt review. Why not check out my other in-depth articles on all the best cold-weather fishing clothing and accessories, which cover socks, insulated thermal layer pants, and gloves.

Steve Fitzjohn