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Ski 100, Thermal Underwear Base Layer Top, Men's

Sale 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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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: 8510029

Product Features

A photo of the Ski 100, Thermal Underwear Base Layer Top, Men's in use

Ski 100, Thermal Underwear Base Layer Top, Men's | Designed for skiers who practice at low intensity (low perspiration), looking for a warm base layer in cold weather.

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

Moisture wicking

Very low: Component encourages wicking and minimal drying.


Average: Brushed lining for warmth.

Odor control

We have reduced environmental impact by dyeing the thread before weaving it

Product Customer Reviews

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2023 Reviews
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Ski 100, Thermal Underwear Base Layer Top, Men's,charcoal gray
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Excellent purchase

Soft, warm, excellent moisture handling.

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Hi Virgilio,

Thank you for taking some time to review our ski base layer, we truly appreciate your input!

We are glad to know that it met your expectations and that you are satisfied with its quality.

We look forward to seeing you again soon in your Decathlon Ottawa!

If you'd like to let other sports lovers know about your experience, don't hesitate to leave us a review on Google right here!



Communication Leader, Décathlon Ottawa

Cozy lightweight layer

Good fit for me but sleeves are a touch short. I have long arms and the 2XL usually fit very well. These are a bit shorter.

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Hi Oliver,

Thank you for your review, and sharing details about how the product fits. This will help customers buying in the future and we are always looking to share feedback to enhance the products with the team. We are looking forward to seeing you back in store soon!

Great fit

Great fit and warm

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This is a super warm base. If you are working hard you get hot. It performs well I got 2 and I will buy again.

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Most Wanted!

This is what I’m looking for! Worth the money!

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Great! Happy to hear that you found what you needed

Warm and cozy

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

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Warm and soft

Warm and soft!!! And VERY GOOD PRICE

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Nice and warm!

A good snug fit and keeps you arm and comfortable.

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Great value and decent construction

Nice top - warm light and a good size. Washes and dries well.

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Great value and decent construction

Warm but light - has survived 6 washes without any signs of wear

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Super warm

Really warm and cosy. Only downside is the material on the inside of the front neck opening is starting to bobble already.

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My partner has bought 3-4 different brands, I only found this site a few weeks ago and highly recommend these ski / thermal wear tops, quality and price out does every over brand we have Tried and bought more since

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good starter layer

good product ,great price would recommend !

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Good product

Fitted well nice soft material and warm just what I needed

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Hi Miranda, thank you for the 5-star rating of our store. We hope to see you back in store very soon for all of your sporting needs.

very good warm

Great value

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Size Guide

Size Guide Visual

Additional Product Information


Main fabric

  • 100% Polyester cationic

What is the fit of the 100 base layer?

The 100 base layer comes in a regular fit. It is a classic straight cut that adapts to 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 various respects, and 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.

How to dress to stay warm on the slopes

All you need is 3 technical layers to stay warm on the ski slopes. Layer 1 or 2nd skin, to stay dry. Layer 2 or an insulating layer, to keep the heat in. Layer 3 or a protective layer, to protect against bad weather.

Determining the environmental impact of our products

The environmental impact of the product is calculated over its entire lifecycle and using various indicators. An overall 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 matches perfectly with 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