Trek 900 men's Mountain Trekking Trousers - Dark Grey



Made for
Perfect for all-year round mountain trekking thanks to their high level of protection (windproof and water-repellent effect).
Sizes guide


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DurabilityUse of a reinforced fabric at the knees and buttocks.
Freedom of movementBi-stretch fabric, preformed knees, elasticated waistband.
Quick dryingSynthetic fabric to enhance moisture transfer and quick drying.
Water repellentSurface treated to prevent water from seeping into the fabric.
WindproofTight weave for active protection against the cold.
LightweightThey weigh about 460 g in size 44 (L).
Easy maintenanceMachine washable synthetic fabric, requires no ironing.
Environmental impactC RATING - Comparison: men's lightweight trousers - technical details
Waranty2 Years
Technical Information

Sizing info
These trousers are slim-fitting. The use of a two-way stretch fabric allows for perfect ease of movement. Choose your usual size or one size up, if you prefer to wear baggier trousers. Inside leg 84 cm in size 44 (L)
2 zipped hand pockets 2 zipped thigh pockets 1 zipped rear pocket Lower leg hem tightening to fit the trousers to the shoes. Lower leg zips Lower leg hook to attach trousers to shoes
Water resistance info
N.B. this product is not WATERPROOF. The water-repellent coating will prevent the trousers from getting wet too fast but will not keep you dry in steady rain. In rainy weather, you will need to wear waterproof trousers on top. Water resistance can restored by ironing the trousers after washing.
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 more info:
Sizes38 to 50.
Information / Concept / Technologie
Main fabric : 88.0% Polyamide, Main fabric : 12.0% Elasthane Yoke (General) : 50.0% Polyamide, Yoke (General) : 43.0% Polyester (PES), Yoke (General) : 7.0% Elasthane Lining : 100.0% Polyester (PES)

Maintenance tips
Wash at 30°C.


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Used for 2 to 8 weeks
Love this, light and easy to wear. Great service and delivery from decathlon.
Used for 2 to 8 weeks
Lovely to wear whilst running. It kept me cool. It washes really well and has kept bits shape and colour
Great affordable t-shirt, but watch your sizing!
Used for 2 to 8 weeks
Very happy with this t-shirt for running, but found the sizing advertised very confusing. Found Decathlon clothing to come up VERY small. I am a Size 12 and the 44/US M in this is a comfortable, slightly roomy fit which is what I wanted. It washes well too.
Comfy and quick to dry
Used for 2 to 8 weeks
Really like this T-shirt. Comfy and quite roomy - although I did order M/L when I am usually a S/M but I like my running T-shirts fairly loose. It's a great colour, quick to dry and a good price and quick service from Decathlon. Fab!
No stretch
Used for 1 week or less
There was no give in this material - restricting movement.
Response of the brand
Hi Jenny,
Thank you very much for your feedback. It is really valuable for us to keep improving our products. I will forward this information to our Product Manager to work on this point.
Federico, Running Leader

Perfect running t shirt
Used for 1 week or less
Light weight t shirt
Not fitted
I bought this in 2 colours as so pleased with it
Good t-shirt
Used for 1 week or less
I'm normally a size M in t-shirts (size 12) but with this brand I had to go up to a size L-XL as the material isn't very giving. Good little t-shirt though, nice material which isn't itchy.
Running top
Used for 1 week or less
Lightweight top, comfy for running
Amazing for the money (so far!)
Used for 1 week or less
I've only worn this once so can't vouch for it's quality after a few wears / washes, but after wearing it to the gym earlier I'm very happy. The material is almost like a thin mesh so it's really breathable and dries quickly. I'm a size 10 and got a M which is quite loose fitting but I prefer it like that.
Great value, confusing UK sizing
Used for More than 1 year
I purchased one of these tops 1 year ago, liked it and it held up well, so decided to buy another this year. The fabric and fit is fairly different. Whereas the old one has less give, the new one is stretchier. They are both fine and do the job well.

Sizing wise, I've found items come up a bit small and their UK sizing on the dropdown list is different from that on their sizing charts. I am a UK 14 and purchased an EU 42 which is an OK fit, definitely not overly roomy.

My top from last year is still going strong and I am very pleased with the overall value for money.
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