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Forclaz Trek 900, Warm Down Hiking Jacket, Men's

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Model: 8373600

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Product Features

Forclaz Trek 900, Warm Down Hiking Jacket, Men's is designed for mountain trekking for multiple days in cold weather.

Confront the extreme cold with this jacket filled with RDS-certified down and feathers*. It's the warmest jacket in the range!

A photo of the Forclaz Trek 900, Warm Down Hiking Jacket, Men's in use


Comfortable between 23°F and 0°F. RDS down with a fill power of 660 CUIN

Compact design

Can be stuffed into its inner pocket to save space in the backpack

Water repellent

Completely water-repellent fabric. Waterproof hood and shoulder inserts


Strengthened shoulder panels and cuffs for abrasion resistance


Ventilation zippers help evacuate heat generated by the body


This down jacket weighs approximately 1.3 lbs in size M.


Completely water repellent fabric. Waterproof hood and shoulder inserts.


2 hand pockets, 1 zipped chest pocket. 2 mesh inner pockets.

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Forclaz Trek 900, Warm Down Hiking Jacket, Men's,carbon gray 

Forclaz Trek 900, Warm Down Hiking Jacket, Men's,carbon gray

Product Customer Reviews

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Forclaz Trek 900, Warm Down Hiking Jacket, Men's,carbon gray
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Very Comfortable

Very Comfortable to wear.

Top Jacket

For its price, this is a belting jacket, I spent a lot of time researching down jackets and chose to take a punt on this one and I haven't been disappointed..

Very poor quality

The coat itself warm but the quality is so poor. The material is wafer-thin (apart from the shoulders and hood) and the zip broken within 2 days of use.


Thanks for taking the time to review our Forclaz Trek 900 Down Jacket. I'm sorry to hear that you had a bad experience with this product, especially with the zip. We use YKK (a leading zip manufacturer) zips in this model to try and ensure reliability and durability, so hopefully the problem you have encountered is a rare one. I would invite you to return to your nearest store and i'm sure they can find a solution for you.

With regards to the thickness of the outer material, the objective is to keep this jacket as light and packable as possible for storage in a backpack whilst trekking, so it is necessary to keep the outer relatively thin, obviously whilst making it durable and keeping the price reasonable. We appreciate your feedback on this though, for future models perhaps we can look to improve this aspect of the jacket.

Thanks again for reviewing the product.


Peter - Forclaz Product Expert, Decathlon UK



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Light weight and awasome stuff for winter...

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First time visit to decathlon zirakpur. Salesman are very cooperative. No problem in exchange. Good quality material. Good arrangement during pandemic .

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As Expected Good Quality

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Excellent product.... Worth every penny

When I think about any trek , I think about durability , abrasion resistance , lightweight , compactness and stability in extreme cold weather and this jacket has everything.... Stability in -18 degree , Easy to use . Excellent product

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Warm in -7 but..

I went for kedarkantha. The minimum temperature was -7 C. Pro: It kept me warm. But, it is so susceptible to getting torn, I already have a feather coming out from one very small tear.

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Product was nice and good to use

Product was nice and I used this jacket up to -10 degree temperature, it worked well. But I felt a little bit not handy in wearing and also Cost is a little bit more

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Super coat

This is the warmest most comfortable coat I’ve ever had highly recommend this super warm coat it’s like having the duvet off your bed with you 24/7!

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Excellent product

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Excellent product..true value for money

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Perfect for minus temp.

I used it for minus 24

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Warm But Fragile

Got it before a month...used it for chadar trek..for 15 days.. Its warm...very warm comfy and lightweight.. But its fragile...jacket... Not waterproof... My down feather..of hand sleeves got collected at some places... I used it properly ...We were 3 people...who bought same jacket... But only my problem.. Their jackets. Are fine..even after rough use in trek.. I want to repair or replace the product...

Hello Pankaj

Thank you for your valuable review. We are sorry to hear that you were not satisfied with the product. Trek 900 Mountain Trekking Jacket is designed to keep you warm and be light weight to provide maximum comfort while trekking in very cold climate.

The gathering of feathers inside jacket is caused due to the feathers getting wet. Since the jacket is not waterproof, It is important to protect it from rain/water with a external outer shell.

However It doesn't mean the jacket is ruined as you can dry the jacket flat on ground and the feathers will get its shape back or you can tumble dry it before.

I have given the link for washing and taking care of your down jacket for your reference

Down Jacket Washing Procedure :

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


Product Trainer and Passionate Backpacker

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Additional Product Information



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

Main fabric

  • 100% Polyamide


  • 100% Polyamide


  • 100% Polyamide
  • 26% Spandex


  • 100% Polyurethane


  • 26% Spandex
  • 74% 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 0°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 23°F in this case.

* what is rds certification?

Our traceability system lets us 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 3rd-party organization.

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% feather fill, the fill power is guaranteed to be 660 CUIN or more (European standard).

Weight of the fill

XS: 6.7 oz S: 7.1 oz M: 7.4 oz L: 7.9 oz XL: 8.3 oz 2XL: 8.8 oz

The advantages of a duck down and feather fill

The fill power of down has 3 advantages for mountain sports: - Thermal insulation provided by 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 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°F, 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 from getting in the jacket and giving you time to find shelter. The shoulders and hood of the down jacket are waterproof as they are more exposed to the rain. 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?

Follow the guide: We recommend that you use the wash-in care product It restores the water-repellent properties of the fabric and optimizes the performance of your garment throughout its lifetime.

Reducing the risk of feather loss

The main stitching of the compartments containing the down and feathers are heat-sealed to prevent the loss of feathers



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.

Storage instructions

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

Superior quality. Unbeatable prices.

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