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Men's mountain backpacking sleeveless down gilet - MT100

Sale price: $79.99 Regular price:

Warm and compressible, this sleeveless down gilet filled with 85% down and 15% feathers lightens the weight of your trekking bag, while providing good warmth.

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Sale price: $79.99 Regular price:

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About this item:

  • Weight: 12.5 oz (355 g) in size L
  • Pockets: 2 x Zipped Hand Pockets I 1 x Chest Pocket with Zip fastening
  • Warmth: Wadding: 85% down / 15% feather. Fill power 660 CUIN. Jacket hem drawcord
  • Water repellent: Surface-treated outer fabric to prevent water from getting inside (PFC-free)
  • Compact design: Easily packs into its storage bag
Model: 8317724

Product Videos

Product Features

Men's mountain backpacking sleeveless down gilet - MT100 | Our team of trekking enthusiasts designed this RDS certified feather and down gilet for trekking comfortably in cool weather.

Warm and compressible, this sleeveless down gilet filled with 85% down and 15% feathers lightens the weight of your trekking bag, while providing good warmth.

A photo of the Men's mountain backpacking sleeveless down gilet - MT100 in use


Wadding: 85% down / 15% feather. Fill power 660 CUIN. Jacket hem drawcord

Compact design

Easily packs into its storage bag

Water repellent

Surface-treated outer fabric to prevent water from getting inside (PFC-free)

Freedom of movement

Its sleeveless design and light weight make it very comfortable for walking


2 zipped hand pockets. 1 chest pocket with zip fastening


This gilet weighs approximately 355 g in size L

Questions & Answers

Product Customer Reviews

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my son doesn’t…

my son doesn't take it off in winter, daily use without a jacket or with it depending on the temperature

very good product

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I'm against products...

I am against water repellent chemicals so it suits me as such

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Good Warm Gillet

Very warm & comfortable. The XL is slightly smaller than normal, but perfect fit over a tee shirt.

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very easy maintenance

very easy maintenance

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Very practical with its…

Very practical with its small bag

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Very Warm Under Jacket Parka Winter Waterproof Snow Hiking SH900 -20°C Black Men,,,,,didn't feel the cold

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Lightweight and effective product

Correct cut and very good size

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Great vest

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As described

As described

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Very Good 👍👍👍👍👍👍👍👍👍👍 Rr

Nice jacket


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Simple but...

Nice to wear

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Extremely warm

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Size Guide

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Additional Product Information


Padding: 85.0% Grey Duck Down, 15.0% Grey Duck Feather ; Lining: 100.0% Polyamide ; Main fabric: 100.0% Polyester

Why wear a down gilet?

A gilet helps to keep the body warm. It protects the chest, neck and kidneys from the cold, as these areas are especially sensitive to chills. It is 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 low weight: down is lighter than synthetic wadding while offering the same degree of warmth. This saves even more weight in your backpack- Ultra-compressible

Inflating power of down/feather filling

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 sleeveless down gilet, with its 85% down/15% feather filling, the fill power is guaranteed to be 660 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.

Weight of the filling

S: 119 gM: 124 gL: 130 gXL: 136 gXXL: 142 gXXXL: 149 g

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.

A snag? here's how to repair your sleeveless padded gilet

A tear on a padded gilet 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 Decathlon workshops offer an in-store repair service to mend your sleeveless padded gilet using a heat-bonded patch.

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 during prolonged exposure to the rain. 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 the water-repellent properties?

Once you have cleaned your padded gilet, 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.

Storage instructions

Store folded in a clean, dry place.Do not store folded in its storage bag.



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