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Men's Trek 100 Down Hiking Jacket

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Sale price: $79.99 Regular price:

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Model: 8397298

Product Features

A photo of the Men's Trek 100 Down Hiking Jacket in use

Men's Trek 100 Down Hiking 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.

Product Customer Reviews

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Men's Trek 100 Down Hiking 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

Feather origin

Thanks to our traceability system, we can guarantee the origin of the feathers, in compliance with our commitment to use responsibly sourced materials. Our suppliers are committed to using only feathers that come from ducks that are bred for their meat and are plucked.

Fill power of the down/feather filling

For this jacket filled with 85% down / 15% feathers, the fill power is guaranteed to be 800 CUIN (European standard) The fill power is the capacity of the down to insulate by "trapping" a certain volume of air. Consequently, the higher the fill power (i.e. the higher the CUIN number), the more space it occupies and the more air it traps thereby delivering more thermal insulation.

Weight of the filling

XS: 82 g S: 88 g M: 94 g L: 101 g XL: 108 g 2XL: 115 g 3XL: 4.4 oz

The advantages of a duck down and feather filling

The down's long-lasting fill power gives it 3 important qualities for hiking: - Thermal insulation thanks to the air trapped in the down and feathers - Ultra-lightweight: to provide equal warmth, feathers are lighter than synthetic padding. This saves even more weight in your backpack - Ultra-compressible

Care instructions for jackets filled with down and feathers

The down jacket can be worn throughout the winter and will certainly need to be washed. Follow the instructions by clicking the link below: How to wash and dry your down jacket

In the event of rain

The fabric of this down jacket is water-repellent. It makes drops of water run off the surface, which delays the time it takes for water to get inside the down jacket, giving you time to get out of the rain. However, we advise you to wear a waterproof jacket over the down jacket in case of prolonged exposure to rain.

How to reactivate the water-repellent property?

Follow the guide: And use a wash-in waterproofing product that restores the water-repellent properties of the fabric and optimizes the performance of your garment throughout its lifetime.

A score for comparing the products' environmental impact

The product's environmental impact is calculated over its entire lifecycle using different indicators. An overall ABCDE rating is given to help you easily identify products with the best environmental performance by comparing and contrasting products of the same type (T-shirts, pants, backpacks, etc.). Decathlon actively promotes this environmental rating initiative. For more information:



Product testing

All our down jackets are laboratory tested with 3 mph wind, worn as a 3rd layer on a thermal mannequin (over a long-sleeved T-shirt and fleece). Their level of thermal insulation is measured on a scale of 1 to 5, so that you can make the choice that best suits your use.

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

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    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual