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Women's Seamless Ski Base Layer Bottom - BL 580 I-Soft - Black/Purple

Sale price: $16.00 Regular price: $29.99

Enjoy the unparalleled comfort of an incredibly soft second skin thanks to the I-Soft technology (brushed fabric).

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Sale price: $16.00 Regular price: $29.99

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8548387

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Product Features

A photo of the Women's Seamless Ski Base Layer Bottom - BL 580 I-Soft - Black/Purple in use

Women's Seamless Ski Base Layer Bottom - BL 580 I-Soft - Black/Purple | Developed for the skier who practices at average intensity (mild perspiration) looking for a comfortable and extremely soft second skin in cold weather.

Enjoy the unparalleled comfort of an incredibly soft second skin thanks to the I-Soft technology (brushed fabric).

Moisture wicking

GOOD: smart body mapping for perspiration wicking and quick drying.


AVERAGE: bodymapping integrated into a brushed component 165 Gr/m2

Irritation reduction

Seamless Technology: fewer seams to reduce irritation.

Odor control

The component limits perspiration odours Lab tested to ISO 17299-3.

Questions & Answers

Product Customer Reviews

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Used under the combination…

Used under the suit in skiing and mountain biking perfect



Used for a stay…

Used for a sports stay in Lapland. Nothing to complain about: heat ok and above all dries very quickly to be quickly washed for the next day. Used with tops of the same brand to be optimally prepared for the cold.

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Very elastic for the…

Well elastic for sports

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The best company for the winter

They protect from cold and humidity. They do not disappoint in any context: countryside, forest, mountain excursions, trekking, skiing. Highly recommended!

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comfortable, light, dries quickly

comfortable, light, dries quickly

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Very well in time...

Very good in cold weather

Good product and hot...

Good product and hot as desired

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On top 👍 Perfect…

On top 👍 Perfect for Lapland

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the tights are gorgeous...soft and very stretchy. wicks sweat and keeps you warm. I wore it under technical trousers to not get cold at the camp at night. Of course, because it is underwear, it shows inside; If you buy underwear thinking that you can wear it and take a walk outside, it will not work for you. Also, thanks for speeding up my shipment.

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Heat supply under…

Warmth under ski pants in very cold weather, or under lighter pants (mountain hiking type) for evening ski touring... Super comfortable

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used in station of…

used in ski resort this winter, very comfortable to wear

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Size Guide

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Additional Product Information


Main fabric: 97.0% Polyamide, 3.0% Elastane

What type of fit is the bl 580 i-soft ski base layer?

The BL 580 I-Soft thermal base layer comes in a SLIM fit. They stop below the knee to avoid overlapping layers (socks + base layer) creating folds in the ski boot, which may affect your comfort. They are like a second skin that hugs the body, which reduces rubbing and improves moisture wicking.

What are the benefits of polyamide?

Polyamide has the highest strength of all textile raw materials (even when wet) and is very stretchy.This breathable fibre manages moisture very well and provides good temperature regulation.These specially textured super-soft yarns give fabrics a silky, natural feel. Ideal for tight, seamless clothing.

What is i-soft technology?

I-soft technology enhances the fabric's performance, providing a variety of benefits: softness, warmth and next-to-skin comfort. It also enhances garment performance, providing better heat regulation, humidity absorption and thermal insulation. To achieve this softness, the base layer is brushed.

What is i-band technology?

I-Band technology is an innovative design used around the waist of the I-Soft top and bottom base layers. It helps keep the garment in place so that it doesn't ride up or fall down when skiing.

Technical structure of the product

Thanks to its intelligent bodymapping and brushed polyamide fibre created from I-SOFT technology, this second skin will ensure you feel a warmth that is distributed evenly over the whole body.

A product-specific environmental rating

The environmental impact of the product is calculated over its entire life cycle 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, trousers, backpacks, etc.)

This product is repairable.

We commit to repairing your product free of charge for the duration of the warranty. Whatever it is, fixings, seams, zips, etc. This service is offered in your usual store. However, if we can't repair your product (production defect), we will exchange it or reimburse you.

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 find in real-life use (snow, cold, powder snow, etc.) The design teams ensure that the programme 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


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