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Thermal Underwear Base Layer Top, Women's

Sale price: $9.99 Regular price:

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

Color: Select a color
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: 8510031

Product Features

A photo of the Thermal Underwear Base Layer Top, Women's in use

Thermal Underwear Base Layer Top, Women's | Developed for low-intensity skiers (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

Component encourages wicking and minimal drying.


Average: Brushed lining for warmth.

Odor control

The polyester fiber has a low odor-reducing capacity.

Product Customer Reviews

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1653 Reviews
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Thermal Underwear Base Layer Top, Women's,charcoal gray
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Warm theromo top

Very comfy and warm. Looks smart.

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Excellent product... great for base layer

Used this product for a recent ski trip... so cozy and warm that I didn't want to take it off!

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Got the pants as well I would recommend these to anyone, extremely comfortable and warm.

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Super warm!

Great base layer, super warm and not too bulky! Love it, can’t wait to get the leggings when they’re back in stock!

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Hi Logan,

Thank you for taking the time to write to us about your shopping experience. We truly appreciate your feedback.

Wishing you a fantastic day :)


Decathlon Brampton Team



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Hi Lucy,

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

Wishing you a fantastic day :)


Decathlon Brampton Team


so comfortable and easy to wear for long tome

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A must have winter top

Lovely top, great fit and so warm and comfortable Great under clothes and also smart enough to wear on it's own

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Very cosy base layer. Helps to keep me warm in the house without the use of heat. Will pay for itself very quickly. I wear the leggings also.

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Very warm

All good for winter on the River.

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Great product

This is a great product for the money. It’s a bargain. Don’t waste money on more expensive options. This keeps you warm and is comfortable to wear either on its own or under other garments

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Great product with reasonable price

I really love the inner side of this top, very soft material. Wearing this when going out make my body warm.

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Ski base layer

Great product came back to buy more

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I bought these with the matching leggings and bought the children’s set for my son for a trip to Sweden and they were amazing! We went skiing in -17 degrees Celsius and they kept us warm and dry and I love the snuggly fleece Lining. Would buy again and no way would I spend more anywhere else.

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Lovely and warm

A snug fit, comfortable and warm.

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Different to picture.

It has a high turtle neck, not what's pictured. Unfortunately I need them for tomorrow, otherwise I would be returning.

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Additional Product Information


Main fabric

  • 100% Polyester cationic

What is the fit of the simple warm base layer?

The Simple Warm 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. It is limited in its ability to reduce odors.

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.

A product-specific environmental rating

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, ...).

Determining the environmental impact of our products: recycled polyester

By recycling plastic bottles or textiles to produce our polyester, we reduce the use of petroleum-based resources while keeping the material's breathability in practice.

Determining the environmental impact of our products: dope dye

Textile dyeing requires a lot of water but also produces waste water from the dye baths. To reduce this environmental impact, we opted for a bulk dyeing process that involves adding the color pigments when the yarn itself is being produced.



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