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Thermal Underwear Base Layer Pants, Kids'
A warm and comfortable base layer featuring a brushed component, flat seams, and stretch mesh.
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
Component encourages wicking and minimal drying.
Warmth
High: brushed interior for warmth.
Odor control
LOW: The polyester fiber has limited odor-reduction properties.
Softness
Knitted with very soft thread for extra comfort and softness.
Product Customer Reviews

I ordered the top and bottom for my 7 year old daughter. She is a US size extra small to small (6-7), and she’s very small and short for her age, so I ordered the size 8 years. It was entirely too small. I then ordered the 10 years size and it’s a much better fit. Besides the fit, the quality of the item seems great! There were no weird smells or anything either. Great kids Baselayers, but especially for the price, it’s a steal. Can’t recommend enough - just size up at least two sizes.
Hi, This item is awesome, just one adjustment a waist cord for skinnier kids. Thank you.
Good quality
Warm base layer for kids, size is smaller than expected, with legs quite short even with my average height child.
Warm base layer, you need for winter. It is cozy and comfortable.
I bought these for my kids to wear as a skiing base layer on days when the weather isn’t frigid. They fit well and keep their legs warm, but not too warm. A great buy for the price!
Seems good enough for the price you pay.
Hi Samya,
Thank you for taking some time to review our Kids' Ski Base Layer Bottoms - BL 100 Black.
We hope your kid could keep warm during their outdoors activities by getting the right layers!
We'd love to see you again very soon,
Sportively,
Anna
Communication Leader, Décathlon Ottawa
Affordable price and quality is good
Hello Payal,
Thank you for taking the time to write to us about your product experience. We truly appreciate your feedback.
We would really appreciate it if you could also drop us a google review, it will help others find out about our store easily: https://g.page/r/CfN9rpYl0dwfEAg/review
Wishing you a fantastic day :)
Thanks & Regards,
Decathlon Brampton Team
My child refused to wear a jacket on top of his costume so this served its purpose! And it is not only for skiing. Just a really good buy!
Great
Good quality, brilliant prices
My kids love these and they do the job brilliantly
My son loved these thermals Recommended them
I’ve bought these for my son as a way of staying warm during training, perfect
Really lovely material maximum warmth and well priced
Additional Product Information
Composition
Main fabric
- 100% Polyester cationic, 100% of the thread is dope dyed
What is the fit of the kids' bl100 base layer pants?
The Kids BL100 base layer is cut to provide 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.
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, ...).
Origin
Imported
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.
Care instructions
Wash before first use. Machine wash at 30°C. Synthetic cycle. Turn inside out. Dry flat in a well ventilated place. Do not tumble dry. Do not dry clean. Do not iron. Do not place on a radiator.
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
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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 Pants, Kids'
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.
