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Ski I-Soft 580, Thermal Underwear Base Layer Pants, Boys’

Sale price: $20.00 Regular price: $24.99

Its softness and its I-Soft technology (brushed fabric) give this base layer unprecedented comfort.

Color: Select a color
Size: Select a size
Sale price: $20.00 Regular price: $24.99

Free shipping over $35

Final Sale: No returns or exchanges

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8559488

Product Features

A photo of the Ski I-Soft 580, Thermal Underwear Base Layer Pants, Boys’ in use

Ski I-Soft 580, Thermal Underwear Base Layer Pants, Boys’ | Our team has developed this base layer for kids. It offers a good compromise between warmth and breathability.

Its softness and its I-Soft technology (brushed fabric) give this base layer unprecedented comfort.

Moisture wicking

High: Smart body mapping for perspiration wicking and quick drying.


High: Built-in body mapping with a brushed component for increased warmth.

Irritation reduction

Seamless Technology: limited seams to reduce irritation

Product Customer Reviews

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Ski I-Soft 580, Thermal Underwear Base Layer Pants, Boys’
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Top Qualität

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Für meine Tochter

Alles gut

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Cumple con lo que ofrece

Retiene el sudor y es muy conformtable

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Perfecto para días de mucho frío

Muy cómodo, no se arruga

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Buena prenda

Lo compre para mi hijo y va muy cómodo.

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Buena relación calidad/precio

Buena relación calidad/precio

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Maravillosas y mantienen bien el calor corporal

Son cómodas, se adapta perfectamente al cuerpo y mantienen el calor corporal

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Muy cómodos y calentitos

Lo que realmente se busca a la hora de ponerlo debajo de otra prenda.

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Ce vêtement n'est pas…

Ce vêtement n'est pas utilisé pour le ski mais dans le cadre des entraînements de kayak slalom. Les enfants qui le portent en sont ravis. C'est agréable à porter et leur garanti une douce chaleur. Il resiste bien aux fréquents lavages.

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Super sous vêtement mais…

Super sous vêtement mais taille petit

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Il est bien, mais…

Il est bien, mais mon fils a préféré les collants et au final je rachèterai les collants pour faire du ski et pas ce sous-vetement pour cet age (9ans). Par contre, tres bien pour sortir dehors ou faire du sport autre.

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Tien chaud rien a…

Tien chaud rien a redire a voire dans le temps

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qualité prix excellent

qualité prix excellent

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Produit très adapté à…

Produit très adapté à la pratique du ski Bonne idée qu’il soit court juste au dessus des chaussettes

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Additional Product Information


Main fabric

  • 96% Polyamide
  • 4% Spandex

What type of fit does the i-soft 580 base layer ski pants base layer have?

The I-Soft 580 Base Layer Ski Pants comes in a slim fit. They stop below the knee to avoid overlapping layers (socks and underwear) creating folds in the ski boot, which may affect kids' comfort. The asymmetric waistband gives an excellent fit around the waist. They are like a 2nd skin that hugs the body, which limits rubbing.

What are the benefits of polyamide?

Polyamide has the highest resistance of all textile raw materials (even when damp) and is very stretchy. This breathable fiber gives extremely good moisture management, reducing odors thanks to its natural properties as well as good temperature regulation. These specially textured, super-soft yarns give fabrics a silky, natural feel. Ideal for tight, seamless clothing.

Technical structure of the product

With its intelligent body mapping and brushed polyamide fiber created from I-SOFT technology, this 2nd skin will ensure kids feel warmth that is distributed evenly over their whole body.

A product-specific environmental rating

The environmental impact of the product is calculated over its entire lifecycle and using various indicators. An overall ABCDE score is given to help you easily identify products with the best environmental performance 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.

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

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

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    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual