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Men's Mountain Backpacking Sleeveless Padded Gilet Trek 100
This fine and warm gilet is our most eco-designed mountain trekking sleeveless jacket!
Free shipping over $35
Final Sale: No returns or exchanges
Free returns
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Videos
Product Features

Durability
> 20,000 cycles in the Martindale test. 20 denier thread. Polyamide canvas.
Warmth
Inflating polyester fill. Drawstring at jacket base.
Ecodesign
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.
Weight
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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Product Customer Reviews

I'm just short of 6ft with a 39" chest and this fitted me perfectly - oh and it's really snug!
Really good value for money
Really comfy and warn
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.
Perfect gilet for trekking, hiking and everydays
Very pleased. Light weight, packs very small (used for hiking), and warm enough for walking in Jan.
Great as an outer garment to keep the body warm when pursuing outdoor pursuits
Love this gilet, excellent lightweight thermal layer, I wear it all the time!
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, light weight
Too good
Good
Good
Quality is good n worth the price. Thank you very much Decathlon for the good product. my daughter liked it very much
Good product satisfied
Size Guide

Additional Product Information
Composition
Main fabric
- 100% Polyamide
Main lining
- 100% Polyamide
Padding
- 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: http://developpement-durable.decathlon.com/
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: https://www.quechua.co.uk/advice/how-do-you-restore-water-repellent-properties-your-jacket-a_86426
Functions
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: http://developpement-durable.decathlon.com/
Origin
Imported
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.
Decathlon makes the difference
-
Research and development
delivers high-quality cost-effective products
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State-of-the-art production processes
minimize manufacturing costs
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Optimized supply chain
reduces retail prices
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Minimal retail footprint
lowers overhead and indirect costs

Men's Mountain Backpacking Sleeveless Padded Gilet Trek 100
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Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.