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Forclaz Men's MT100 Down Puffer Vest

Sale price: $60.00 Regular price: $79.99

Lightweight and compressible, this sleeveless down gilet filled with 90% down and 10% feathers lightens the weight of your trekking bag, while providing good warmth.

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Size Guide

This product runs small

Sale price: $60.00 Regular price: $79.99

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

About this item:

  • Warmth: RDS ethical down with a fill power of 800 in³. Jacket hem tightening.
  • Compact design: Easily folds away into its left-hand pocket using a zipper with double pull
  • Weight: ~ 7.8 oz in size M. 1.2 oz/m² fabric; 15 denier
Model: 8397299

Product Features

Forclaz Men's MT100 Down Puffer Vest | Our team of hiking enthusiasts designed this feather and down gilet for hiking comfortably in cool weather.

Lightweight and compressible, this sleeveless down gilet filled with 90% down and 10% feathers lightens the weight of your trekking bag, while providing good warmth.

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


Down with filling power of 800 CUIN (cubic inches). Jacket hem drawcord

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. PFC-free


2 zipped hand pockets

Abrasion resistant

Outer fabric: 100% polyamide, 35 g/sqm. 15 denier


This sleeveless jacket weighs approximately 220 g in size L

Questions & Answers

Look for product information, frequently asked questions, opinions...


Does Decathlon ever stock this vest in the color Black? All my other Decathlon jackets are in black so I don't need a blue one. Thanks


We only carry the blue color of this jacket for this season. Next season will start from September 2024. We will be taking your feedback for our next collections' color selections.

By Uluç on May 30, 2023 | STAFF

Product Customer Reviews

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Hi it's good 👍😊

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It's a bit...

It runs a little small, you have to take the size above

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It is really compact after folding. Warms beautifully. It must not get wet.

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Used in ski touring. Very compact

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cool and pleasant to use

I recommend it, it does its job.

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Light and versatile...holds very well on the back...

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Disappointed with the cut…

Disappointed with the cut when worn It was a gift for my 68 year old father

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Sleeveless down jacket

Sleeveless down jacket

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puffy jacket

Very good product

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Convenient, useful, lightweight and aesthetically valid.

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Very good article

Very good article

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Very nice jacket without…

Very nice sleeveless jacket at a fair price

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Too bad this little…

Too bad this little down jacket doesn't come in a flashy color: red - orange

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Weight problem.

In size L announced on your site as weighing 220g. In reality, it weighs 225g. I understand that your weight is approximate on samples. But all your products are well beyond the indicated weight. Here it's only 5g, so it doesn't matter... But sometimes it's more than 110g extra (like the rain overpants for €18). Too bad, my goal was a light hike and I'm very careful about weight. At Decathlon, there is a clear desire to deceive the customer on this point. If it were due to random sampling, there would sometimes be a little more weight, sometimes a little less weight. There, it's clearly still much heavier in real life... 50, 70, 100g or even more than 110g...
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Size Guide

Size Guide Visual

Additional Product Information


Padding: 90.0% Grey Duck Down, 10.0% Grey Duck Feather ; Main lining: 100.0% Polyamide ; Main fabric: 100.0% Polyamide ; Padding - Inner fabric: 100.0% Polyester

Why wear a down gilet?

A gilet helps to keep the body warm. It protects the chest, neck and kidneys as these areas are especially sensitive to chills. It’s sleeveless so it saves weight in your backpack, provides even more breathability during exercise and excellent comfort of movement when worn under a jacket. Worn underneath the MT100 down jacket, it can provide 6°C extra warmth when compared to a down jacket worn without the gilet.

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 fts thermal insulation capacity and its potential to InchtrapInch 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 gilet with its 90% down and 10% feathers filling, the fill power is guaranteed to be 800 CUIN or more (international standard).

How to care for a down and feather gilet?

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.Our advice: 1/Machine wash with a detergent suitable for down or technical garments, at 30°, with 2 or 3 tennis balls. Gentle spin between 800 and 1000 rpm. 2/ - Tumble dry on cotton mode with 2 or 3 tennis balls, repeat 2 or 3 times until 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 to restore the water-repellent 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? here's how you can repair your sleeveless down jacket

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

Weight of the filling

XS: 67.5 gS: 71 gM: 76.5 gL: 82 gXL: 88 g2XL: 94.5 g3XL: 101 g

Product testing

10 trekkers (5 men and 5 women), independent of Forclaz, 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 trekking.

Storage instructions

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




Size Guide Visual

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