TREKKING Backpack 900 | 90+10 Litre-Khaki



Made for
Backpack that is durable and has a comfortable carry system for very long expedition-type treks lasting several weeks. SYMBIUM concept: The most comfortable in the range
Sizes guide

Carrying comfortAdjustable back and shoulder straps.
Multiple compartmentsWide front access. 10 pockets + water bladder.
Versatility2 water bottle holders, pole holder rain coverTent holder (straps under the bag)
Weight2.8 kg.The weight indicated is that of our benchmark sample.
DurabilityDurable 600 denier polyester fabric. Polyamide-reinforced bag bottom.
VentilationBack with aluminium bars to reduce pressure and allow the back to breathe.
Easy hydrationInternal compartment for a water bladder (not included).
Eco-designWe dye the yarn with coloured granules to avoid using dye baths
Warranty10 Years
Technical Information

SYMBIUM technology
In order to be comfortable, a backpack must also be well-balanced while you walk. Symbium technology consists of a jointed waistband that allows the backpack to adapt to the trekker's movements when walking. Thanks to the symbium system you can say goodbye to the swinging effect that tire out trekkers.
Extendable volume: 90L + 10 litres extension thanks to adjustable height upper lid. The volume of each backpack is measured using a standard method: we use small balls to fill the main compartment as well as each pocket. The balls are then emptied into a graduated container in order to determine the equivalent volume in litres, with a margin of error of just a few %
Dying process
Textile dyeing requires a lot of water but also produces waste water from the dye baths. To reduce the environmental impact, we have opted for mass pigmentation (also called Dope Dye), integrating the colour pigments from initial thread manufacture. This process reduces the CO2 emissions of this backpack by 30% compared to the old model.
How to pack a backpack?
Put your bedding at the bottom. Put heavy gear (tent, camp stove, food) near your back. Pack your clothes around these items. Your sleeping mat can be placed under the flap and the tent under the bag if there is no room inside. Keep a rainproof jacket and fleece close at hand. In the pockets, place small items for the day (sunscreen, map, glasses...). If carrying a hydration pack (water bladder), this should be placed in its special pocket along the back.
Why are our rain covers grey when some trekkers want them to be brightly coloured?
The grey colour used for the covers of our trekking rucksacks is neutral because it consumes less dye. The component is made of BITON: this process allows us to lower our CO2 impact and reduce consumption and water pollution in comparison to coloured models. These small measures demonstrate the commitment of Forclaz to improve the environmental impact of its products.
Complementary accessories
Compatible with 2x15L 1/2 moon storage bags. Check out our storage accessories that facilitate the use of the TREK 900 bag here:
Information / Concept / Technology
Main fabric : 100.0% Polyester Lining : 100.0% Polyester Yoke : 100.0% Polyamide Pocket : 65.0% Polyamide, Pocket : 35.0% Elasthane Bag cover : 100.0% Polyester Webbing : 100.0% Polypropylene Coating : 100.0% Polyurethane

Our DECATHLON in-store mountain instructors: English, Spanish, Indian, French, German, Dutch, helped conceive and design this product, throughout the entire development process. If you would you like to become a tester or co-designer, contact us at

Product test
All our trekking rucksacks are tested in use by users who represent those for whom the products are designed, in conditions similar to those found in real-life. In particular, our "Test Missions" bring together the product manager with people who are not affiliated with DECATHLON to test, improve and validate the products. This specific model was approved by trekkers on the Tour du Mont Blanc route.

Stockage tips
Store your bag in a dry and ventilated place, out of the sun.
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