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Men's Mountain Trekking Down Jacket - Comfort -5°C - TREK 100 - Navy

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A photo of the Men's Mountain Trekking Down Jacket - Comfort -5°C - TREK 100 - Navy in use

Men's Mountain Trekking Down Jacket - Comfort -5°C - TREK 100 - Navy
This RDS-certified down and feather jacket keeps you warm on bivouac between +5° and -5°C.

Warm and lightweight, it is the most compressible of our down jackets and takes up less space in your backpack so you can travel light!


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

Compact design

Easily folds away into 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 290 g in size L.Fabric 35 g/m2; 15 Denier


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Product Reviews

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148 Reviews
Write review Men's Mountain Trekking Down Jacket - Comfort -5°C - TREK 100 - Navy
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This jacket is warm and beautiful.

comfortable and does the job

Tried this jacket in snowfall and icy area, kept me alive.

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Nice inexpensive hiking camp jacket

Nice inexpensive hiking camp jacket. I would order it again.

Good quality

Product also good and good service, but billing processing is poor so please increase your billing counters.

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Great for winters

Very warm and very comfortable wearing. The fabric is soft and the grey color variant looks amazing in daylight.

Defect In Jacket

It is a warm jacket but packing is coming out.Either product is defective or stitching threads are weak.


Hello Munish

Thank you for your valuable review. We are sorry that you were not satisfied with the product. Could you please write back to me with the image of the defect so that we can provide the best possible solution.


Product Trainer and Passionate Backpacker


Its not warm enough in 1°

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Hello Arindam

Thank you for your valuable review. We are sorry for the issue you faced. Our Trek 100 jackets are tested on the ground with a group of external trekkers with proper layering and are rated for -5 degrees while trekking, However, the static temperature protection wouldn't be -5 and we also believe that temperature is subjective and depends on many factors for person to person and that is why the rating is given to guide our users on the basis of the actual test.


Product Trainer and Passionate Backpacker

Top Of the World Product

No comment. I am speckles

Too Good.

Very warm in snow and freezing winds.


Awesome product

Light And Warm

Light and warm . highly recommend

Value For Money

Nice warm and cosy jacket. Save a lot of space.

the cover is missing

Jacket is decent enough to keep you warm.. however, I didn’t get the cover shown in the images. It was one of the reason I purchased this jacket but sadly didn’t get it.

Excellent jacket

Light weight and useful...I am wearing it most of the time

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trek 100 jacket

great warm jacket. i'm normally an xl ordereed a 2xl fits perfectly. havent tried it in minus temps yet but good for vancouver 2-3c temps

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Product information



  • 15% Grey Duck Feather
  • 85% Grey Duck Down

Main fabric

  • 100% Polyamide

Main lining

  • 100% Polyamide

Padding - Inner fabric

  • 100% Polyester

How warm is this padded jacket?

This padded jacket, worn as a 3rd layer, has been certified for an active comfort temperature of -5°C during a standardised 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 5 km/h wind.We have also tested this model in "static" mode; the comfort temperature is +5°C 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 wadding 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 wadding?

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).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 organisation.

Weight of the filling

XS: 82 gS: 88 gM: 94 gL: 101 gXL: 108 g2XL: 115 g3XL: 124 g

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: brief:1/ machine wash, 30°, 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 padded jacket! 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 life cycle 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, trousers, backpacks, etc.).Decathlon is committed to displaying the environmental information of its products.For more information:


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