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Thermal Underwear Base Layer Top
This warm base layer, will keep you comfortable throughout the day.
Free shipping over $35
Free returns
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Videos
Product Features

Moisture wicking
VERY LOW: a fabric that provides moisture wicking and low-level drying.
Warmth
AVERAGE: brushed lining for warmth.
Odor control
VERY LOW: the polyester fiber has a low odor-reducing capacity.
Product Customer Reviews

I wasn't expecting much, so was happily surprised by the flattering fit and soft material. A really nice layer for the price. I will wear both as a long sleeved shirt on daily basis in winter and as under layer when hiking or skiing. Size was right on. I usually wear a small or medium in other brands and I ordered a medium and it fits just right.
Very warm and comfortable fit!
Very happy with my thermal tops Lovely and warm . Best ones I have bought .I would recommend these tops .
The warmest top I've had in the price range. I now have two and can't fault them!
nice design
Great fit, very warm and reasonably priced
This was my favourite winter item last year so I bought a new set this year. Love it! So warm.
Very good
It is excellent.
I brought this because I went to the Blue Mountains in NSW, I live in QLD Australia, I was thrilled with how cosy warm I was, night and day. Have been washed several times and absolutely no sign of wear and tear. And the purchase price was an absolute bonus. Thank you Decathlon
Nice fit
I love it , I do a lot of running , keeps me warm
Excellent for working outside and sports activities
Bought for my partner, who was very pleased with the quality.
Great top. Bargain price. Very warm for watching sons football matches!! Washed well
Size Guide

Additional Product Information
Composition
Main fabric: 100.0% Polyester
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 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?
You just need 3 layers to keep dry on the ski slopes:- Layer 1 or a 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 the elements.
A product-specific environmental rating
The product's environmental footprint is calculated for its entire life 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 created, 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.
Origin
Imported
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
-
Research and development
delivers high-quality cost-effective products
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State-of-the-art production processes
minimize manufacturing costs
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Optimized supply chain
reduces retail prices
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Minimal retail footprint
lowers overhead and indirect costs

Thermal Underwear Base Layer Top
Your location: City, ST
Please enter a valid city with state or zipcode. Example: San Francisco, CA or 94101
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Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
