Kids' High-Tech Cross-Country Skiing Base Layer XC S UW 500 - grey


Our team has developed this technical base layer for regular and/or medium intensity cross-country skiers.

Thanks to its "seamless" design with minimal seams, the 500 base layer acts as a second skin, offering optimum comfort and good temperature regulation.

Color: Foggy blue / Pebble grey
Size: size guide


Product benefits


Good regulation of your body temperature for optimum comfort.


Component that quickly eliminates moisture.

Freedom of movement

"Seamless" technology with fewer seams providing excellent comfort.

Easy maintenance

The synthetic material is machine washable and does not require ironing.


120 g in size 10 years

Technical information


"Athletic" cut, i.e. very close fitting.
If you are seeking a second skin effect for your child (skin tight), choose their usual size.
If you want a looser fit, choose one size up from your usual size.


This high-tech base layer is a knit composed of polyester and polyamide yarn for good moisture management, and elastane fibres for elasticity.
This smart knit structure combined with the "seamless" technology (i.e. fewer seams) provides excellent freedom of movement and comfort.

How to dress your child for their cross-country ski outings?

Follow the 3-layer technique.
layer 1: second skin (high-tech base layer) that transfers moisture away from the body and keeps your skin dry.
layer 2: insulating (T-shirt, fleece) layer that provides warmth and transfers moisture outwards.
layer 3: outer protective (jacket) layer that protects from the weather conditions: wind, snow and cold.
Adapt the number of layers to the level of your physical effort and the weather, and make sure that the clothing is breathable.

A score for comparing the products' environmental impact

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, trousers, rucksacks, etc.) with each other.
Decathlon actively promotes this environmental rating system.
For more information:


2 years

Product concept & technology

Product Composition

Main fabric 71% Polyester, 20% Polyamide, 9% Elasthane


Keep on a hanger or folded in a clean, dry place.

User Directions

Not designed to be worn directly underneath a backpack.


Our design team is based at the foot of the Mont Blanc, in Haute-Savoie (France). All year round, our designers create and develop products that are appealing, simple, and technologically advanced. These are then ruthlessly tested in the field because we believe that the only way to continually improve is to test our products in the same real-life conditions you will experience.

Maintenance advice

Machine wash - 40° max - permanent press

Do not bleach

Do not tumble dry

Do not iron

Do not dry-clean

Customer reviews


Environmental Impact

The carbon footprint of this product is:
7.11 kg CO2e
1 kg of CO2e represents 5km in a petrol car (according to the Base Carbone© of ADEME)
What's the carbon footprint ? We evaluate the environmental impact of all our products. At all stages of their life cycle: from the extraction of the raw material, passing through transport to the plant which transforms them, the transformation, the manufacture, the transport of the finished product, until its use and end of life. Find out more
The environmental note of this product is: C
What is the environmental note? Overall environmental score for this product in comparison to others in the same category. It is calculated based on its impact on the environment (air and water emissions, greenhouse gas emissions, depletion of natural resources) at each stage of its life cycle, according to a system managed by ADEME. Find out more