Product Colors and Sizes

Special product, Innovation Special product, New Release Special product, Special product, Sale

Men's Ski Underwear Top I-Soft

Sale price: $34.99 Regular price:
Color: Select a color
Size: Select a size
Size Guide
Sale price: $34.99 Regular price:

Free returns

Free shipping over $30

Free pickup

San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8548379

Product Features

A photo of the Men's Ski Underwear Top I-Soft in use

Men's Ski Underwear Top I-Soft is designed for

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

Moisture wicking

AVERAGE: intelligent bodymapping for effective transfer and fast drying.


AVERAGE: bodymapping integrated into brushed component for a feeling of warmth

Odor control

AVERAGE: polyamide fiber has a medium capacity to reduce odors.

Irritation reduction

Seamless technology: limited seams to reduce irritation.

Product Customer Reviews

Skip to reviews
158 Reviews
Write a Review 

Men's Ski Underwear Top I-Soft,black
Filtered by reviews Loading reviews…

Excellent fit, comfort n sweat absorbent

icon-circle-checkmark verified purchase
Not Warm at all

This product is total waste and not give you warm feel at all and also bubble's started appearing on fabric after one wash

icon-circle-checkmark verified purchase

Hello Sir,

We regret the inconvenience caused by the recent purchase.

Please help us understand the nature of your usage so that we can guide you to the best product.

INFORMATION-Wash care-Wash the polyamide fabric in a regular, cold water washing machine cycle, using a bleach-free laundry detergent. If a washing machine is not available, the fabric can be hand washed in cold water.

please share the details at


Dont Buy This Item

Bought it for trek a month ago.. But material is comfortable but...not durable.. Many threads of cloth..are coming out from.. everywhere... I dont know... whether Decathlon will product...or resolve my issue or not.. Better u go with some cheaper ski base layer.. They are better buy than this..

Hello Sir,

Thanks a lot for writing and we regret the inconvenience caused by the purchase.

This product is one of our best thermals in the offer and a bestseller as well,the issue you have faced should not occur,kindly visit any of the nearest store and exchange the product for a new thermal.

Kindly share the pictures of the product @,so that we can check with the production team and rectify it.

I will be available for any further queries at the same mail ID shared.



Buena camiseta para usar como primera capa para salidas invernales, se ajusta bien y te mantiene caliente.


Buena camiseta para usar como primera capa para salidas invernales, se ajusta bien y te mantiene caliente.

Buenoy comodo


icon-circle-checkmark verified purchase

Como productos similares que había adquirido anteriormente, se adapta a lo que necesito. Primera capa para salir en bici y para esquí de fondo. Confortable.

icon-circle-checkmark verified purchase
Camiseta excelente mejor de lo que pensaba

Desde el momento que te pones la camiseta térmica notas sensación agradable se ajusta perfectamente

icon-circle-checkmark verified purchase
Buena camiseta térmica

Camiseta muy cómoda y con buena relación calidad-precio.

icon-circle-checkmark verified purchase
Buena prenda

Esta bien organizado

icon-circle-checkmark verified purchase
Muy buena

Buena calidad y buen precio

icon-circle-checkmark verified purchase


icon-circle-checkmark verified purchase
Como un guante

Libertad de movimiento. Mantiene mi calor corporal ya que soy bastante friolero

icon-circle-checkmark verified purchase
Muy buena prenda

Ligera y confortable. Se ajusta muy bien y protege del frío a la vez que te aporta comodidad

icon-circle-checkmark verified purchase
Camiseta térmica

Lo utilizó para hacer ciclismo de carretera. Estoy muy satisfecho con el producto,me parece que calidad precio esta muy bien!!!

icon-circle-checkmark verified purchase
Skip to reviews

Size Guide

Size Guide Visual

Additional Product Information


Main fabric

  • 97% Polyamide
  • 3% Spandex

I-soft underwear is what type of fit?

I-Soft underwear is SLIM fit. It is like a second skin that hugs the body, which 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 fiber enables very 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

Thanks to its intelligent bodymapping and brushed polyamide fiber 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 increases the performance of the fabric via different benefits: soft, feeling of warmth, comfort for the skin. Also, it increases the performance of the product with better thermoregulation, the absorption of damp and thermal insulation. To achieve this softness, the base layer is brushed.

What is i-band technology?

An innovation located at the waist, enabling the fabric to always be well positioned so that it does not ride up when practicing. 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 should you 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 insulating layer, to conserve heat. Layer 3, or protective layer, to protect against bad weather.

An environmental rating of the product

The product's environmental footprint is calculated over its entire lifespan 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.)



Product testing

All the Wedze products are designed and developed in the Mont Blanc Valley. They are then tested under the same real-life conditions as those you will encounter in use (under the snow, in the cold, in the powder snow, etc.). The design teams ensure that the program for which the product has been designed and developed perfectly matches 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


Size Guide Visual