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Men's Seamless Ski Base Layer Top BL 580 I-Soft – Black Blue
Enjoy the unprecedented comfort of this incredibly soft second skin thanks to its I-Soft technology (brushed fabric).
Free shipping over $49
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
GOOD: intelligent bodymapping for effective transfer and fast drying.
Warmth
AVERAGE: body mapping integrated into a brushed component 165 g/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
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Product Customer Reviews

A good price-performance ratio.
Gift given to a young skier; happy with the warmth and fit
Good product. I found myself very well. I also have many thermals from ODLO but honestly lately I prefer this one. I recommend it.
Very good product for outdoor work
Great
Good product
Super high for skiing, much more breathable than the old one I used so far
ALRIGHT
top
Perfect for cold weather
good product
Good value for money
Very good value for money
Warm and light at the same time, good protection on the lower back and kidneys because long enough, pretty design. It is stored in the alpine ski section of the store, but I use it for cross-country skiing and trail running.
Superb article. Comfortable to wear
Size Guide

Additional Product Information
Composition
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.It offers a second skin effect with a slim fit that limits rubbing.
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 enables very good moisture management, reducing odours 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
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.
What is i-soft technology?
I-soft technology enhances the fabric's performance, providing a variety of benefits: soft, feeling of warmth, comfort on the skin. It also increases the performance of the product with better thermoregulation, the damp absorption and thermal insulation. To achieve this softness, the base layer is brushed.
What is i-band technology?
An innovation located at the waist so that the fabric is always well-positioned and does not ride up when practising. Also, the top and bottom of our i-soft are equipped with this technology, so that all you have to worry about are your holidays.
How to dress to stay warm on the slopes?
All you need is 3 technical layers to stay warm on the ski slopes. Layer 1 or second skin, to stay dry. Layer 2 or an insulating layer, to keep the heat in. Layer 3 or a protective layer, to protect against bad weather.
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, snags, seams, zips, etc., these solutions are offered in your usual store. However, if we can't repair your product (production defect), we will exchange it or reimburse you.
To help you choose the right size
The model on the photo is wearing a size M and measures 185 cm. Measurements: Chest measurement: 104 cmWaist measurement: 104 cmArm length: 45 cmInside leg length: 80 cm
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 programme 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
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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

Men's Seamless Ski Base Layer Top BL 580 I-Soft – Black Blue
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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.
