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Thermal Underwear Base Layer Pants, Men's

Regular price: $9.99 Regular price:

Enjoy a warm and comfortable base layer with a brushed component, flat seams, and a stretch knit.

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Size: Select a size
Sale price: $9.99 Regular price:

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8510030

Product Features

A photo of the Thermal Underwear Base Layer Pants, Men's in use

Thermal Underwear Base Layer Pants, Men's | Developed for the skier with a low-intensity activity level (low perspiration) in cold weather, looking for a base layer with low-level warmth.

Enjoy a warm and comfortable base layer with a brushed component, flat seams, and a stretch knit.

Moisture wicking

Very low: Component providing moisture wicking and low-level drying.


Average: Brushed interior for more warmth.

Odor control

Very low: The polyester fiber has limited odor-reduction properties.

Product Customer Reviews

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2154 Reviews
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Thermal Underwear Base Layer Pants, Men's,charcoal gray
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Warm and fit

My husband said the base layer plants is warm and fit and conformable

Mens Ski Base Bottoms

Therse are a Christmas Gift and will be much appreciated.

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Hi Lynda,


Thank you so much for your review.

We are glad to hear that you had a great shopping experience & we can't wait to welcome you to our store again.

Thanks & Regards,

Decathlon Brampton Team

very tight


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Thank you very much for taking the time to post your review.

For information, this product is acclaimed by customers, rated 4.59/5, with 1287 reviews.

This product exists in all sizes, this product does not suit you, you can easily exchange or get a refund in store.

See you soon.

Sébastien, Offer Team, Decathlon Canada

My legs are comfortable and toasty

I definitely wouldn't recommend wearing these when the weather is above 0. They're almost *too* good imccold weather, and they're so comfortable that I almost forgot that I was wearing them.

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Hi Ryan,

That is awesome, we're so glad you're staying warm and enjoying your pants. Thank you so much for writing a review with us.

Great extra layer

Really warm and very comfy with no labels sticking in you or annoying seams

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Hello Tom,

Thank you very much for your feedback!

Happy to hear that you are enjoying your product.

We hope to see you again soon.

Decathlon Calgary Team

Get it get


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Hi Augustine,

Thank you so much for your review.

We are glad to hear that you liked our product & we can't wait to welcome you to our store again.


Decathlon Brampton Team

Under Length.

Great bottoms but the leg length is short and in winter if you are 6' plus you will need socks pulled up.

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Very comfy.

Would recommend getting a size up.

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Hello Aa! 


Thank you for taking the time to write to us about your product experience.


Wishing you a fantastic day :)


Decathlon Brampton Team

Warm and cozy

I need need something like this. With the colder weather coming upon us. Good match with the shirt too.

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Good one

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Great decathlon product

Exactly what you want

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Poor quality

I only pai £6.99 I should've paid more for better quality

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as advertised after one short walk in the cold

They appear warm and certainly comfortable. No big test if them yet.

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My Ski Base Layer.


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Tahir Abbas

It keeps me warm in the cold weather of Glasgow.

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Additional Product Information


Main fabric

  • 100% Polyester cationic, 100% of the thread is dope dyed

What is the fit of the 100 base layer?

The 100 base layer comes in a regular fit. It's a classic straight cut suitable for all body shapes.

What are the benefits of polyester?

Polyester is the most used fiber for base garments because it is relatively inexpensive and offers excellent performance in some respects, especially because the fibers can be knitted to obtain a very lightweight and durable fabric. It actively absorbs moisture but does not dry particularly well when wet. It is limited in its ability to reduce odors.

A product-specific environmental rating

The product's environmental footprint is calculated for its entire life and with various indicators. A score from A to E is given to help you easily identify the most eco-friendly products by comparing products of the same type (T-shirts, pants, backpacks, etc, ...)



Product testing

All Wedze products are conceived, designed, and developed in the Mont Blanc Valley. They are then tested under the same conditions as you would experience in real-life use (snow, cold, powder snow, etc.). The design teams ensure that the program for which the product has been designed and developed perfectly matches its use in the field.

Storage instructions

Dry thoroughly before storing.

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual