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Forclaz Trek 100, Down Packable Puffer Backpacking Vest, Men's

Regular price: $39.99 Regular price:

This slim-fitting and warm backpacking sleeveless jacket is the most eco-designed product in the range!

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Sale price: $39.99 Regular price:

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San Francisco, 735 Market St. Options

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Model: 8573837

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Product Features

Forclaz Trek 100, Down Packable Puffer Backpacking Vest, Men's | Our team of backpacking enthusiasts designed this sleeveless jacket for backpacking comfortably in cool weather

This slim-fitting and warm backpacking sleeveless jacket is the most eco-designed product in the range!

A photo of the Forclaz Trek 100, Down Packable Puffer Backpacking Vest, Men's in use


Polyester fill with good fill power (4.4 oz/m²). Drawstring at jacket base


Fill made of 70% recycled polyester. Grey lining with low CO2 impact

Compact design

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


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

Water repellent

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


This sleeveless jacket weighs approximately 8.6 oz in size M

Easy to maintain

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

Product Customer Reviews

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Forclaz Trek 100, Down Packable Puffer Backpacking Vest, Men's
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Excellent product

Great value, warm gillet

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Thank you for your kind words Martin.

We are glad to see that you are happy with your recent purchase.

Have a great day!


Sports Advisor (Customer Service)

Decathlon Wednesbury

Decathlon UK Limited. Company number: 03140144. VAT number: GB679262296.

Registered office: 9 Maritime Street, London, SE16 7FU.

Forclaz bodywarmer

Got the large size as medium was too small. Good value for money and appears well enough made and eco friendly.

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Great value

A great purchase. Light weight, but warm.

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Excellent jacket

Really good jacket. Great fit.

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Warm and lightweight.

Very comfortable.

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Good and warm

Excellent bit of kit , fits well , warm

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Forclaz trel 100 review

Great product for wearing under my waterproof jacket on wet n cold riding days on my mountain bike . Fit is snug without being tight , kept me warm without getting too hot

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Even better and warmer than I expected and its so light weight.

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Fully comfort, with safety pocket.

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It Is So Light And Product Is Good.

Delivery could have been little bit faster

Supbbbb Products In -5 Degree Cold:freezing:

Amazing👍 mind blowing🤯

Nice product...kept me warm even 16000 feet at GOKYO, Nepal....Thanks

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Snug fit and lightweight.

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Size Guide

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Additional Product Information


Main fabric

  • 100% Polyamide

Main lining

  • 100% Polyamide


  • 100% Polyester cationic

Do you want to know more about the fill used?

We use 100% polyester fill (70% recycled) at 4.4 oz/m². The fill is made from silicon-coated spiral fibers that make it highly compressible and highly durable. Despite its low thickness and light weight, the air trapped inside gives it high insulation properties. It retains its warmth even when wet.

Do you know why the inner lining of your padded 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 conventional 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 black Trek 100 sleeveless jacket model, the outer fabric uses a clean dyeing process known as dope dyeing (the thread is dyed before the yarn is woven) reducing CO2 emissions by 36%. More information:

Durable materials

This polyamide fabric that uses 20 denier thread can withstand 20,000 abrasion cycles. Martindale test, 12947-2 standard. 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

Water-repellent properties of the 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 soaking up water and keeps it lightweight and warm. The fabric is made water-repellent by treating its outer surface; however, this property may deteriorate with use. We recommend that you renew after each wash.

Pfc-free water-repellent treatment

On the Trek 100 sleeveless jacket, the water-repellent treatment doesn't contain PFCs (perfluorocarbons), i.e. it is PFC-Free. PFCs are used to make a fabric water-repellent, but they are very toxic for the environment and people. By replacing the PFCs with other technologies that we are developing to enable the same level of performance, we are helping to reduce this environmental impact.

How to restore the water-repellent properties?

Follow the guide! We recommend that you use the dip-coating care product to restore the water-repellent properties


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 products' environmental impact

The environmental impact of the product is calculated based on its entire lifecycle and using different indicators. A general score from A to E is provided to help you easily identify the most eco-friendly products by comparing products of the same type (T-shirts, pants, backpacks, etc). Decathlon is committed to displaying this environmental information. More information:



Storage instructions

In order to preserve all the padding's fill power, store your padded jacket on a hanger rather than stuffing it in its storage bag!

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
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    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

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    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual