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Women's Mountain Trekking Down Jacket - TREK 100

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A photo of the Women's Mountain Trekking Down Jacket - TREK 100 in use

Women's Mountain Trekking Down Jacket - TREK 100
This RDS*-certified down jacket keeps you warm during your treks in cool weather! (down to -5°C during physical activity)

Our most compressible down jacket enables you to save space in your rucksack and trek light. Its fill power of 800 CUIN delivers very good warmth for its weight!


Comfortable between 5°C and -5°C. RDS ethical down with a fill power of 800 CUIN

Compact design

Easily folds away in its left-hand pocket using a zip with double puller.

Water repellent

Surface-treated outer fabric to prevent water from getting in.


This down jacket weighs approximately 275g in size M.35 g/sqm fabric; 15 Denier


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Product Reviews

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100 Reviews
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Very nice and worthy jacket

This jacket is very warm and comfy. Most importantly it can just fit in very small of the best jackets available in the market.Easy to wash and handle. It works as wind cheater as well as very warm also.

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Love this jacket!

I first bought a small and needed to return for a medium (I have an "athletic" frame), and their customer service was very quick to help and also very helpful. The fit of the jacket is very flattering, and the material feels great, as well.

Nice product

Thanks Decathlon nice jacket

Warm lightweight Jacket

Packs up nice and small. Lightweight and great colour. As I am long in the body could have been just an inch longer.

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I couldn't resist cold when I went to manali.

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I am much satisfied with product and it's grace.

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Really wearable and surprisingly warm considering it is so lightweight. Have worn it most days since buying it - only reach for something thicker when it is really frosty/snowy

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Great product

Finally got to test my jacket out in some weather. This jacket kept me perfectly warm in 25 mph sustained wind gusts with a 50 degree base temperature. I was outside for four hours and never felt a chill. So pleased with this jacket. Great value!



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The is a good jacket

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Lovely and warm

Lovely warm jacket, that has been invaluable

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Muzafar Ahmad
Good Value for money

Nice product

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Excellent product

Excellent for -2 degree also

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not too good

really average

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Product information


Main fabric

  • 100% Polyamide

Main lining

  • 100% Polyamide


  • 100% Polyester

Thermal insulation - warmth

This padded jacket, worn as a 3rd layer, has been certified for a comfort temperature of -5° during a standardised test in a thermal chamber.The mannequin wears a synthetic long-sleeved t-shirt and a light fleece underneath. It works with a simulated 5 km/h wind.In our heat comparison tool, it represents 2 stars.We have also tested this model in "static" mode; its temperature rating is +5°C in this case.

*what does the rds certification mean?

We use RDS certified down: Responsible Down Standard.Thanks to our traceability system, we can guarantee the origin of the feathers in accordance with our commitment to use responsible materials. Our suppliers are committed to using only feathers that come from ducks that are bred for their meat and which are plucked after slaughtering.

Inflating power of down/feather filling

For this down jacket with its 85/15 filling, the fill power is guaranteed to be 800 CUIN or more (European standard). The fill power is a measure of the down's thermal insulation capacity and its potential to "trap" air. So, down with a higher fill power (higher CUIN number) will occupy more space, trap more air and provide greater thermal insulation.

The advantages of a duck down and feather filling

The durability and fill power properties of down give this jacket 3 qualities for hiking:- Thermal insulation thanks to the air trapped in the down and feathers- Ultra low weight: down is lighter than synthetic wadding while offering the same degree of warmth. This saves even more weight in your backpack- Ultra-compressible

In case of rain

The material of the quilted jacket is water repellent. The treatment is applied to the main fabric that makes drops of water run off the surface, thereby delaying the time it takes for water to get inside the down jacket, so you have enough time to get out of the rain.We nevertheless recommend wearing a waterproof jacket over the quilted jacket in the event of prolonged exposure to the rain.

How to wash your feather down jacket

Here are a few tips: close all the zips on your down jacket and put it in the washing machine (synthetic cycle at 30°C).In order to preserve the fill power and warmth, you can even put 2 tennis balls in the machineBe careful to set a gentle spin cycle: a fast spin cycle may create balls of feathers that are difficult to break up.For more advice, click the link below!

How to dry my down jacket

When you take your down jacket out of the washing machine it will seem as if the down has goneTHE TUMBLE DRYER is the best way to restore the fill power of the feathersPut your down jacket in the tumble dryer with 2 tennis ballsRun 2-3 drying cyclesIf you do not have a tumble dryer you can completely dry your down jacket on a drying rack by turning it over and tapping regularly

How do i reactivate the waterproofing properties?

Over time, after washing and the wear and tear during use, the water repellent treatment becomes less effective.This is how to re-activate the water repellent feature of your down jacket! use the care product: Wash-in product for reactivating the water repellent properties

A score for comparing products' environmental impact

The environmental impact of the product is calculated based on its entire life cycle and using different indicators.A general score from A to E is provided to help you easily identify the most eco-friendly products by comparing products of the same type (T-shirts, trousers, backpacks, etc).Decathlon is committed to displaying this environmental information.For more info:

Weight of the filling

XS: 67 gS: 70 gM: 76 gL: 87 gXL: 95 g2XL: 100 g

Down jacket developed using continual improvement methods

The trek 100 down jacket has been improved over the years thanks to all the customer reviews. Thank you for sharing!From winter 2020, the pink model (like the other light colours) will benefit from very light-coloured feathers and down. This will prevent any visually unpleasant dark areas on the down jacket when it is wet.

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