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Trek 900, Backpacking Pants, Men's
Their great freedom of movement makes them perfect for intensive backpacking. And the fabric’s tight weave gives you good protection against the wind.
Free returns
Free shipping over $35
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Features

Durability
Use of a stronger fabric on the knees and seat.
Freedom of movement
2-way stretch fabric, preformed knees, elasticated waistband.
Quick dry
Synthetic fabric encourages moisture wicking and quick drying.
Water repellent
Treated surface to prevent water from seeping into the fabric.
Windproof
Tight weave for active protection against the wind.
Weight
These pants weigh about 1 lb in size S.
Easy to maintain
Machine-washable synthetic fabric, no need to iron.
Product Lifestyle Image Gallery
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Product Customer Reviews

generally comfortable pants, however, the belt really need some work. it gets loose easily and the plastic buckle broke after 1 month's use.
Selected for mountaineering. They are great. Sizing is quite snug so it’s important to go at least one size up for a regular fit.
Great for mountain biking
Hi Krikorian,
Thank you for the 5-star review on these pants! We are happy to hear that you were able to find a product that works well for many different uses!
Kristen
I ordered this item online in store. It wasn't easy to figure out the correct size for gift giving. The online was sized one way & the inshore another. WHAT? Then theres the issue that everything seems small... I wear a small in most items but not at DETHALON. I wear a large inmost items then have to have everything hemmed at least 6" Frustrating to say the least..
Hi Marcia! Thank you for letting us know about your experience. As Decathlon is a global brand, we list the sizing universally in the most common standards. On our tags you'll find US, GB, AUS (and more)! If you hop on the website to order, you'll only have the option to order the sizing we use most commonly in that particular country. We've added sizing conversion charts to the end of each aisle (in store) to hopefully make this system a little less confusing! Please don't hesitate to ask a staff for help in discerning the clothing sizes on your next visit, we're always happy to assist!
Haley
These are great trousers for a fall or summer hike. Though they do fir on the small side so beware.
These are fantastic outdoor trousers for hill walking, scrambling and climbing. Light tough and easy to move in they compare well with top brands like Rab or Mammut. My only beef with them is that they come in only 1 leg length, which for shorties like me is a bit of an issue. Luckily, they have a draw cord at the ankle.
Great walking, trekking and general outdoor trousers.
Good fit, comfortable and great look!
Great trousers at half the price of the competition, Own three pairs only critique would be lack of colours - A blue pair would be nice👍🏻
Very good item!
Great trousers not just for walking but for a working man who needs to look smart yet practical. Lots of pockets and really stylish. Wash well too. A little expensive but then you get what you pay for! And these really are good.
These trousers are extremely comfortable, perfect for scrambling as they're so comfortable to wear. Not really waterproof, anyone walking in heavy rain would struggle, but these pants are so practical, great pockets and stretch on them, not restrictive at all despite them being quite a tight fit, they feel like pyjamas. Will be buying my 3rd pair soon.
These rare not in anyway waterproof. We had showers yesterday. It took these a minute to be soaked through. Despite that they are great non waterproof walking trousers. Comfortable, robust , flexible, quick drying, wind resistant. I really like them and now have 4 . But they are not waterproof
Lovely fit and really comfortable,would recommend
Very good product very easy to wear
Size Guide

Additional Product Information
Composition
Main fabric
- 88% Polyamide
- 12% Spandex
Yoke
- 50% Polyamide
- 43% Polyester cationic
- 7% Spandex
Lining
- 100% Polyester cationic
Sizing info
These pants have a snug, close-fitting cut. The use of fabric with 2-way stretch gives perfect ease of movement. If you prefer looser-fitting pants, choose one size up from your usual size. Inside leg of 33.1 in size S
Accessories
2 zipped hand pockets 2 zipped thigh pockets 1 zipped back pocket Elastic tightening system and a hook on each ankle to adjust the pants perfectly and attach it to the shoe Ankle zipper
What is the water-repellent property of the component?
Please note, this product is not waterproof. The water-repellent property prevents the pants from getting wet too fast but will not keep you dry under steady rain. This can be achieved by wearing overpants. Water-repellent properties can be reactivated by tumble drying the pants for 10 minutes on low temperature. You can also use the Forclaz re-waterproofing spray (ref 8554908)
In case of rain...
These pants are not waterproof. In the event of rain, we recommend you protect yourself with waterproof and breathable overpants. Check out the Trek 500 overpants (ref. 8493660).
Determining the environmental impact of our products
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. For more info: http://sustainability.decathlon.com/
Origin
Imported
Care instructions
Wash at 86°F.
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
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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

Trek 900, Backpacking Pants, Men's
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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.
