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Forclaz Men's MT100 Down Puffer Jacket

Sale price: $60.00 Regular price: $79.99

Warm and light, it is also the most compressible of our down jackets to save space in your trekking backpack. Without a hood, it will also keep you warm under a waterproof jacket.

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This product runs small

Sale price: $60.00 Regular price: $79.99

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About this item:

  • Warmth: Comfortable between 23°F and 41°F. 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 (PFC-free) to stop water from getting in.
  • Weight:This padded jacket weighs approximately 9oz for the middle size
  • Durability: > 20,000 cycles in the Martindale test. 20 denier thread. Polyamide canvas.
Model: 8666094

Product Videos

Product Features

Forclaz Men's MT100 Down Puffer Jacket | This RDS-certified down and feather jacket keeps you warm between 41 F when static and 23 F when active.

Warm and light, it is also the most compressible of our down jackets to save space in your trekking backpack. Without a hood, it will also keep you warm under a waterproof jacket.

A photo of the Forclaz Men's MT100 Down Puffer Jacket in use


Comfortable between 41°F and 23°F. RDS ethical down with a fill power of 800 CUI

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

Abrasion resistant

35 g/sqm outer fabric 15 denier


2 zip hand pockets


This padded jacket weighs approximately 280 g in size L

Product Lifestyle Image Gallery

Image Gallery

Forclaz Men's MT100 Down Puffer Jacket,chocolate truffle 

Forclaz Men's MT100 Down Puffer Jacket,chocolate truffle 

Forclaz Men's MT100 Down Puffer Jacket,chocolate truffle 

Forclaz Men's MT100 Down Puffer Jacket,chocolate truffle 

Forclaz Men's MT100 Down Puffer Jacket,chocolate truffle

Product Customer Reviews

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Forclaz Men's MT100 Down Puffer Jacket,chocolate truffle
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light, warm and comfy


Great Jacket

This is a great jacket. The price was right, and it is hard to tell the difference compared to a higher priced "named" jacket.

Great value, crazy sizing

Outstanding quality for the price. Wanted this is a layering piece for hiking/backpacking, as well as an around town puffy. For those purposes, I wanted a hoodless jacket. This appears to be the hoodless version of the Trek 100. However, the sizing is crazy. I would typically wear a men's medium in most major brands. I ordered multiple sizes to get the right fit thanks to Decathlon's excellent return policy. For reference, I am 5'-7", 165lbs. I couldn't even get the medium zipped up it was so tight! The large was still snug in the shoulders and waist. An XL fit better in these areas, maybe a little baggy, but now the sleeves and length was too long. I kept the L, which is accurate to Decathlon's description (size up). Though not a perfect fit, at this price it will work, and the snugger fit allows me to easily layer it under my hooded synthetic puffy I already have. The length is right, and it's just a little tight though the waiist & stomach, but not excessively so.

Great jacket

Really have been enjoying this jacket. Just warm enough without the bulk. And I really like the fit, not too bulky or loose.

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Hello Rajmy,

Thank you for the 5-star review for our men's hiking down jacket. We are happy to hear that it is keeping you warm and it's the right fit for you. We hope to see you again soon for your next purchase. Have a great day.


Not impressed at all, nice looking jacket but that’s it. Followed the instructions for washing and it didn’t come out the way it went in, it’s now all clumped up and I can’t get it back to the way it was. I have the old synthetic version of this jacket and that’s still alive and well after a numerous washes.

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Best value for money

Bought this after having seen tons of hikers review it on YouTube and comment how it was ‘pound for pound’ the best down jacket they’ve had. They’re so right. It’s warm, light, comfortable - just perfect. Haven’t yet tried it in real cold temperatures but can’t wait to. Tempted to go and buy a second jacket just because of how much I love it so far. Great buy.


Excellent value for money

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Value for money

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Waste Of Money

I bought an L size but the length of sleeves is XXXL. It is no even suitable even for +5 degrees. I am returning this product.

Greetings Sheikh

Thank you for reviewing the product from your experience. Apologies for the experience that you have gone through.

For any queries about size mismatch please get the product checked in our nearest decathlon store with the help of a sports leader and kindly get it verified.

The product is tested and is designed for temperatures of -5 degree celsius with multiple layers beneath the jacket and in an active state of motion.

Please let me know if required more help with your concern.


Warm and cosy

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Very Good

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One of best product of yours

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good product

Easy delivery

Not warm at all

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Hi Kush

Thank you for your review and we are sorry that the product did not match your experience.

Men’s mountain trekking down jacket - MT100 -5°C Burgundy is one of the technical trekking jackets designed to use trek.

How to use them- A base layer beneath the jacket along with and fleece layer will be helpful to keep you warm.

Please let me know more info regarding the same.


Good product

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Size Guide

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Additional Product Information


Main fabric: 100.0% Polyamide ; Main lining: 100.0% Polyamide ; Padding: 100.0% Polyester

How warm is this padded jacket?

This padded 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 5 km/h 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 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). 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 90% down and 10% feathers filling, the fill power is guaranteed to be 800 CUIN or more (international standard).

What is rds certification?

RDS or “Responsible Down Standard” is a worldwide certification issued by an independent organisation to volunteer brands.This standard enables us to guarantee the origin of the feathers in accordance with our commitment to use responsible materials. Our suppliers commit to using only feathers from geese and ducks raised for their meat and slaughtered before down and feathers are collected.To find out more:

How to care for a down jacket?

The down jacket can be worn throughout the winter and will certainly need to be washed. But the less you wash it, the more it will retain its thermal insulation and water repellency.Video: summary: 1/Machine wash with a detergent suitable for down or technical garments, at 30°, with 2 or 3 tennis balls. Gentle spin cycle. 2/ tumble dry with 2 or 3 tennis balls, and repeat 2 or 3 times until it is completely dry.

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

The water repellent property of a fabric is its ability to make water run off its surface without absorbing it. This prevents the fabric from swelling, and keeps it lightweight and warm. The fabric of this down jacket is water repellent, however, we recommend that you wear a waterproof jacket over it in the rain. The fabric is made water-repellent by treating (PFC-free) its outer surface, however this property may deteriorate with use. We recommend that you restore it after each wash.

How do i reactivate the waterproofing properties?

Once you have cleaned your padded jacket, we recommend you use a water-repellent reactivator spray to preserve the hydrophobic properties of the outer fabric. This renews the fabric’s water repellent properties and optimises its performance throughout the lifespan of your garment.

A snag? how to repair your fleece

A tear on a padded jacket can happen when trekking! The good news is that it can be repaired so the tear doesn’t get any bigger or to stop the feathers from escaping. Don't you feel at ease carrying out this repair yourself? Don't worry! Our in-store Decathlon workshops offer a repair service to mend your padded jacket using a heat-bonded patch.

A score for comparing products' environmental impact

The product's environmental impact is calculated over its entire life cycle using various indicators. A score from A to E is given to help you easily identify the most eco-friendly products by comparing products of the same type (T-shirts, trousers, backpacks, etc.) Decathlon is a voluntary supporter of this environmentally-friendly labelling approach.

Storage instructions

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



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