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Men's Mountain Backpacking Sleeveless Padded Gilet Trek 100

Sale price: $20.00 Regular price: $34.99

This fine and warm gilet is our most eco-designed mountain trekking sleeveless jacket!

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Sale price: $20.00 Regular price: $34.99

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Final Sale: No returns or exchanges

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8502012

Product Videos

Product Features

Men's Mountain Backpacking Sleeveless Padded Gilet Trek 100 | Our team of enthusiastic mountain backpackers designed this gilet for walking comfortably in cool weather

This fine and warm gilet is our most eco-designed mountain trekking sleeveless jacket!

A photo of the Men's Mountain Backpacking Sleeveless Padded Gilet Trek 100 in use


> 20,000 cycles in the Martindale test. 20 denier thread. Polyamide canvas.


Inflating polyester fill. Drawstring at jacket base.


Fill made of 25% recycled polyester. Gray lining with low CO2 impact.

Compact design

Easily folds away into its left-hand pocket using a zipper with double pull.

Water repellent

Surface-treated outer fabric to prevent water from getting in.


This gilet weighs approximately 8.6 oz in size M.

Easy to maintain

Synthetic fabric and insulation that can be machine washed at 86°F.

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Men's Mountain Backpacking Sleeveless Padded Gilet Trek 100,black 

Men's Mountain Backpacking Sleeveless Padded Gilet Trek 100,black 

Men's Mountain Backpacking Sleeveless Padded Gilet Trek 100,black

Product Customer Reviews

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Men's Mountain Backpacking Sleeveless Padded Gilet Trek 100,black
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Perfect Fit

I'm just short of 6ft with a 39" chest and this fitted me perfectly - oh and it's really snug!

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Excellent value

Really good value for money

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Really comfy and warn

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Good light weight gilet

This gilet fits well. I am 5ft11 chest 38in size S fits perfectly. This will even give better value if a chest pocket is available either inside or outside.

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Padded gilet

Perfect gilet for trekking, hiking and everydays

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Good gilet, great price

Very pleased. Light weight, packs very small (used for hiking), and warm enough for walking in Jan.

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Fabulous light weight garment

Great as an outer garment to keep the body warm when pursuing outdoor pursuits

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Great Gilet!

Love this gilet, excellent lightweight thermal layer, I wear it all the time!

Superb warmth to weight

I own 6 other synthetic gilets and swear by them for wet-weather outdoor use as well as general use. This is a great bit of kit for the money - it's light, slim/athletic fit and has well-placed pockets. It's better than some others at 3x the price or more - it's simple yet very effective and incredible value (assuming it's durable - only had it a month and used a few times).

Good Quality

Good quality, light weight

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Too good



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super quality - steal deal in clearance sale

Quality is good n worth the price. Thank you very much Decathlon for the good product. my daughter liked it very much

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Good product

Good product satisfied

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Size Guide

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Additional Product Information


Main fabric

  • 100% Polyamide

Main lining

  • 100% Polyamide


  • 100% Polyester cationic

Durable materials

This polyamide fabric that uses 20 denier thread resists 20,000 cycles of abrasion. Martindale test, Standard 12947-2 Outer: 100% polyamide fabric 1.4 oz/sqm, 20 denier Lining: 100% polyester fabric 1.2 oz/sqm, mix of 15 to 20 denier threads

Technical information on the padding

We use 100% polyester padding (25% recycled) Padding is made from silicon-coated spiral fibers increasing compressibility and high resistance. Despite its low thickness, it has high insulation properties thanks to the air trapped inside, and remains lightweight. It remains warm even when wet.

Do you know why the inner lining of your down jacket is gray?

Because the fabric we use reduces CO2 emissions by 40%. The fabric used is innovative because it mixes a self-dyed black thread and an undyed thread. Compared to a classic dyeing process, this process reduces by: • 66% fine particle emissions (PM2.5) • 74% Eutrophication of fresh water • 68% eutrophication of sea water

Additional sustainable development information

On the Trek 100 black model, the outer fabric uses a clean process known as dope dyeing (the thread is dyed before the yarn is woven) reducing CO2 emissions by 36%. More information:

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

The water-repellent property of a fabric is its capacity to make water run off its surface without absorbing it. This prevents the fabric from soaking up water and keeps it lightweight and breathable. The fabric is made water-repellent by treating its outer surface; however, this property may deteriorate with use. In order to reactivate it, follow the guide:


Inside flap under the zipper that protects from the wind. Elasticated cuffs, Soft fabric flap at the top of the collar to protect the chin. Tightening with an elastic cord and toggle at the hem.

A score for comparing the products' environmental impact

The product's environmental impact is calculated over its entire lifecycle using various indicators. An overall ABCDE rating is given to help you easily identify products with the best environmental performance by comparing and contrasting products of the same type (T-shirts, pants, backpacks, etc.). Decathlon actively promotes this environmental rating initiative. More information:



Product testing

In November 2017, 6 backpackers (4 men and 2 women) with part of the Forclaz design team tested this gilet for 4 days in the Southern French Alps. We were able to make the final modifications and validate it for use in mountain backpacking.

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

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