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Forclaz Trek 100, Men's Compact Backpacking Down Jacket

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Model: 8397296

Product Features

A photo of the Forclaz Trek 100, Men's Compact Backpacking Down Jacket in use

Forclaz Trek 100, Men's Compact Backpacking Down Jacket is designed for mountain backpacking over a few days in cool weather.

The most compact down and feather jacket which combines warmth and lightness!


Down with a fill power of 800 CUIN. Jacket hem tightening. Cuffs.

Compact design

Easily folds away into its left-hand pocket using a zipper with double pull.

Water repellent

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


This down jacket weighs about 10.2 oz in size L. 1.2 oz/sqm fabric; 15 Denier.

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Forclaz Trek 100, Men's Compact Backpacking Down Jacket,royal blue 

Forclaz Trek 100, Men's Compact Backpacking Down Jacket,royal blue 

Forclaz Trek 100, Men's Compact Backpacking Down Jacket,royal blue 

Forclaz Trek 100, Men's Compact Backpacking Down Jacket,royal blue 

Forclaz Trek 100, Men's Compact Backpacking Down Jacket,royal blue 

Forclaz Trek 100, Men's Compact Backpacking Down Jacket,royal blue 

Forclaz Trek 100, Men's Compact Backpacking Down Jacket,royal blue

Product Customer Reviews

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Forclaz Trek 100, Men's Compact Backpacking Down Jacket,royal blue
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I bought this jacket just as an extra option while browsing in store one day and it caught my eye. It's very comfy and fairly warm even when not very active. I have worn this with a long sleeve baselayer top also from decathlon on a couple of chilly early morning walks now and it's been very comfortable. In my opinion it's quite a bargain. I have a similar (but synthetic filled) jacket by another make that cost me twice this and in my opinion this is as good if not better. It has a very lightweight and comfortable feel to it when wearing. I've given it 5 stars as value wise i think its great.

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Good value

Great lightweight jacket but very warm

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Worst product

While purchasing this product sales man told me that we can withstand upto -5 degrees with this jacket, now i can’t go outside even temperature 10 degree, I’m very unsatisfied with this product

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Hello Aneesh

Thank you for your valuable review. We are sorry that you were not satisfied with the product. Trek 100 Down jacket is designed for mountain trekker, trekking equipped with full kit/layering and are in active condition. If you have not done proper layering i.e base layer, Fleece and then Trek 100 down jacket, It will not keep warm upto -5 degrees.


Product Trainer and Passionate Backpacker

Very bad jacket

I have bought this with anticipation that this will atleast survive in -2 degree but surprisingly it couldn't survived in 1 degree as well Very bad experience that u have bought another jacket from Moscow

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Hello Ravi

Thank you for taking out time to give your valuable feedback. We are sorry that you were not satisfied with the product. Trek 100 down jacket is designed for trekkers going for mountain trekking with full layering, Warm Base Layer, Mid Layer, Warm Cap, Glove. If you are traveling (not in active condition) and are not trekking (in a certain pace to generate body heat) You might have to choose a jacket which is more warmer.

I hope the information was helpful, Kindly write back to me in case of any further query.


Product Trainer and Passionate Backpacker

I Just Love It

I loved it so much that I have both the colours. A real ultralight down jacket. Very warm. Use it over just one layer in Kashmir's winter. I use to for outdoors as well as office. Simple loved it. Wish it had more colours so that I could have one for each day of the week ❤️

Love it products.

Fantastic product love it. Delivery on time.

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Trekking jacket

Excellent jacket for the price, nice and warm.

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Feathers come out from the jacket

Feathers from the jacket come out and stick to the T-shirt wore inside the jacket

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Hello Harsh

Thank you for your valuable feedback. Trek 100 down jacket contains duck down feathers inside to make the jacket warm and lightweight while trekking and the down feathers has tendency of coming out of even the small wholes and in your case some feathers must be coming out of the stitching and It is not a defect but the common issue in any down jacket unless the seams are replaced with thermabond which we have in our Trek 900 Jacket.

And this doesn't mean that the jacket will be ruined because of the loss of feathers from the jacket as it is in very very less and is not continuous.

However if the jacket is loosing substantial amount of feathers, please feel free to reach out to your nearest Decathlon Store and have the product exchanged/refunded.

I hope the information was helpful. Kindly write back to me in case of any further issues.


Product Trainer and Passionate Backpacker

Average quality

The jacket looks good. The quality could’ve been better, All the threads and feather like particles started to come out just next day. This jacket keeps you very warm and it is water repellent.

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Forclaz down feather jacket

I like 2 things about this jacket beside that the pricing is very reasonable. 1: Its very warm 2: It is so light to wear and also to carry in your bag.

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Excellent Warm & Light weight

This jacket has been a real help in my last year Trek in the month of November , First thing : it is compact and light weight which is of great comfort for any trekker to carry light weight , This jacket was very helpful as it went up to -5 degree :) I recommend this jacket .

phenomenal value.

I'd avoided this jacket assuming the down to be live plucked but having discovered that it is certified and traceable, I struggle to see how Decathlon do this at this price. Down fill rating and construction can't be criticised either. A little heavier than the big names, but probably more durable as a result. Not that you need to worry too much as at one sixth of the cost, you can easily afford to replace it, hell, I think I'll but a spare and still have funds for other gear.

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Some sort of cotton comes out automatically

Some sort of cotton pieces comes out automatically From fine holes of jacket... I think it is damage but lost revisits so can’t exchange

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Down Jacket 100 NAVY BLUE

I had ordered this product on 04.01.2020 and the product was home delivered by Decathlon on 05.01.2020 i.e. within 24 hours of the placement of the order. That's appreciable speed! The jacket is very lightweight and very warm. I have used it on only two layers i.e. inner and shirt and the warmth is excellent. Even while riding motorcycle, I did not, even for a second, felt cold or windy. Worth the price! Thank you Decathlon!!

value for money

great product

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Size Guide

Size Guide Visual

Additional Product Information



  • 85% Grey duck down
  • 15% Grey duck feather

Main fabric

  • 100% Polyamide

Main lining

  • 100% Polyamide

Padding - Inner fabric

  • 100% Polyester cationic

How warm is this down jacket?

This down jacket, worn as a 3rd layer, has been certified for an active comfort temperature of 23°F during a standardized test in a thermal chamber. The model is wearing a synthetic long-sleeved T-shirt and a light fleece underneath. It works with a simulated 3 mph wind. We have also tested this model in "static" mode; the comfort temperature is 41°F in this case.

The advantages of a duck down and feather filling

The filling power of down has 3 advantages for mountain sports: - Thermal insulation thanks to the air trapped in the down and feathers - Ultra lightweight: down is lighter than synthetic padding while offering the same degree of warmth. This saves even more weight in your backpack - Ultra-compressible

How to measure the fill power of a down and feather fill?

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

* what is rds certification?

Thanks to our traceability system, we can guarantee the origin of the feathers in accordance with our commitment to use responsible materials. Our suppliers commit to using only feathers from ducks raised for their meat and plucked after slaughter. We have been awarded RDS certification (Responsible Down Standard) by a third-party organization.

Weight of the filling

XXS: 2.9 oz XS: 3.1 oz S: 3.3 oz M: 3.6 oz L: 3.8 oz XL: 4.1 oz 2XL: 4.4 oz

How to care for a down and feather jacket?

The down jacket can be worn throughout the winter and will certainly need to be washed. Follow our guidance by clicking on the link below: In brief: 1/ machine wash, 86°, with 2 or 3 tennis balls. Gentle spin cycle. 2/ tumble dry with 2 or 3 tennis balls, repeat 2 or 3 times until it is completely dry

In case of rain

The material of the down jacket is water-repellent. It lets drops of water roll off the fabric, delaying water getting in the jacket and giving you time to find shelter. We nevertheless recommend wearing a waterproof jacket over the down jacket in the event of prolonged exposure to the rain.

Water-repellent property of component (not to be confused with waterproofing)

The water-repellent property of a fabric is its capacity to make water run off its surface without absorbing it. As a result, the fabric does not soak up water and stays light and warm. The fabric is made water-repellent by treating its outer surface; however, this property may deteriorate with use. We recommend that you restore it after each wash.

How to restore water-repellent properties?

The water-repellent treatment becomes less effective with time, washing and use. Here is how to restore the water-repellent properties of your down jacket! You can also use the care product: Treatment restoring water-repellent properties

A score for comparing the products' environmental impact

The environmental impact of the product is calculated based on its entire lifecycle and using different 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.). Decathlon is committed to displaying the environmental information of its products. For further information:



Product testing

10 trekkers (5 men and 5 women), independent of Decathlon, tested this down jacket during a week-long trek in November 2016, in the Mont Blanc mountain range. The feedback given to us after this test let us validate this down jacket for mountain backpacking.

Storage instructions

Store on a hanger in a dry place. Do not store folded in its pocket.

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