TREK 100 Men’s Mountain Trekking Leggings - Black



Made for
Warm and lightweight fleece leggings. Perfect on arrival at your bivouac or mountain refuge.
Sizes guide

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WarmthWarm tights. Brushed microfleece inside and outside.
BreathabilityPolyester knit: lets through water vapour generated by the body (RET=6.3)
Easy maintenanceCrease-proof. Machine washable. Quick drying
LightweightOnly 250 g in size L. Micro-fleece (density 140g/sqm)
Environmental impactD RATING - Comparison: men's long leggings - technical details
Waranty2 Years
Technical Information

Fleece component: Insulation provided by air
The fleece component is designed to trap air thanks to the volume created by its texture, this air acts as a natural insulator, keeping the body warm. The brushing of the knit fabric is what traps the air.
A score for comparing products' environmental impact
The product's environmental impact is calculated over its entire life cycle 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, trousers, backpacks, etc.). Decathlon actively promotes this environmental rating initiative. For further information:
SizesS to XXXL.

Weight250 g in size L

Information / Concept / Technologie
Main fabric : 100.0% Polyester (PES)

Our design team is based at the foot of Mont-Blanc, in Haute-Savoie (France). All year round, our designers create and develop products that are appealing, simple and technologically advanced. These are then ruthlessly tested in the field because we believe that the only way to continually improve our products is to test them under the real-life conditions that you will experience.

Stockage tips
Store folded in a clean and dry place

Maintenance tips
Wash at 30°C. Do not use fabric softener. Do not tumble dry. Do not iron


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Used for 2 to 8 weeks
The leg is straigh not skinny
Warm legs
Used for 2 to 8 weeks
Bought for son. Excellent value. Does the job. Easy washing and drying.
Men's Forclaz 50 black trekking tights
I recommend!!!
Good but confused labeling
OK, so they're light fleece with a stretchy waist and very good value for money. But much else to say except I'm 6', and medium fits me. But... They're advertised as a 'tight' and a trouser?! In my experience, tights are tight but these are not, they are loose in the leg like a trouser without pockets or fly. Initially I thought they were mislabelled, but now that I've worn them I think they have two advantages over normal tights. They're more comfortable for just mooching around in but on their own and are better in cold conditions. This simply because they allow a layer of trapped air to form whereas tight-tights usually don't and can feel cold. Under trousers they move easily. So, are they a tight or a trouser? Yes, and at the price worth having just in case...
fleece leggings
Used for 2 to 8 weeks
Worn them on their own for walking and with waterproof trousers in the rain when fishing, comfortable and warm! fantastic!
under £7 and keep your legs lovely and warm
Excellent purchase
Used for More than 2 years
Great store, friendly staff, enormous choices, great deals
Great product and really warm, will definitely be
Used for 1 week or less
It looks totally different in pics. Poor quality
Response of the brand
Hello Mr. Singh,

Thanks for your valuable time to give us a feedback on our product. I apologize for the inconvenience caused to you.

To give you a small insight, all our products are tested for usage and quality under two levels, one in the laboratory and the other in real time by external users. These tests allow us to be sure of our quality and provide our users with a 2-Year warranty on all our products. The product you have received, I believe is an exception and I apologize again for the same. I request you kindly to visit any of our store closer to you and get this product exchanged for a new one or write to

I stay available if you need any further assistance with our products or services in the future.

Sandeep NAIR
Used for 2 to 8 weeks
Torn in 1 day
Used for 1 week or less
This product is warm and serves the purpose.
But, I took it along for a trek, used just for a day during the sleep-time at night, and next day I found that the stitch near abdomen/groin is gone.
Response of the brand
Hello Subhayu,

Thank you for sharing your feedback on the Warm Fleece Pants. We are sorry to hear that our product has disappointed you. This is one of the essential product to keep you warm and I can understand how disappointing it can be to face such issue while you are trekking. I can assure you that we have strict measures at our end to ensure our users receive the good product. But unfortunately, in your case, we have failed to do so. While we re-iterate this message from our end, we invite you to visit any of our stores to have it exchanged or refund.

I hope you find this information helpful :)

Varun Nair
Passionate Trekker

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