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FORCLAZ Trek 900 70L + 10L Men's Rucksack - Grey

was £99.99 -%


This price includes a recycling fee for electrical equipment and batteries DecathlonDeeeTaxMentionAfterPrice / Since

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£99.99 -%
This price includes a recycling fee for electrical equipment and batteries DecathlonDeeeTaxMentionAfterPrice / Since

* From To

* Sales from to Until end of stock
* From and limited stock
Check availability in store
Our teams of trekking enthusiasts have developed this bag especially for men travelling in the mountains for several days and carrying 15 to 20kg. It's durable and lightweight with a carry system that is comfortable for long expedition-type treks lasting several weeks and has an adjustable back and strap for a personalised fit.
  • Lots of pockets, many you can reach on the move
  • Really hard wearing, so don't worry about scraping it
  • Very comfortable for long periods of time

Product benefits

Durability 600 denier ripstop polyester fabric
Base of the bag in reinforced polyamide
Carrying comfort Carry system for men
Adjustable back and straps
Symbium system
Multiple compartments 3 zipped pockets
2 external mesh pockets
2 belt pockets
Versatility 2 water bottle holders
Pole holder
Rain cover
Tent holder
Multi-hook straps
Ventilation Back with aluminium bars reducing the pressure and allowing the back to breathe
Eco-design Bag lining and rain cover made of bulk-dyed polyester. (Dope dye)
Easy hydration Internal compartment for a water bladder (not included)

Technical Information


Extendible volume:
70L + 10 litres extra thanks to the adjustable height of the bag top.
The volume of each backpack is measured using a standardised method: we fill the main compartment as well as each pocket with little balls. 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 %


2.7 kg
The empty weight shown is that of our reference TREK 900 70+10L sample. There may be slight variations


Height: 77cm,
Width: 48cm,
Depth: 38 cm

How to pack a backpack?

Put your bedding at the bottom. Carry heavy gear (tent, stove, food) closest to 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 your waterproof jacket and fleece to 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.

Symbium concept

In order to be comfortable, a backpack must also be well-balanced while you walk. SYMBIUM technology is a belt hinge system that allows the rucksack to conform to the trekker's movements when walking.
Thanks to the symbium system you can say goodbye to the swinging effect that tire out trekkers.

10-year warranty

Our engineers have carried out simulated ageing tests on these backpacks. These tests were conducted on the components, the seams and the finished product. The results enable Forclaz to guarantee the tested bags for 10 years from the purchase date shown on the receipt

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:


2.7 kg

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Composition / advice

Main fabric
100.00% Polyester
100.00% Polyester
100.00% Polyamide
65.00% Polyamide, 35.00% Elasthane
Bag cover
100.00% Polyester
100.00% Polypropylene
100.00% Polyurethane
Washing instructions
Hand wash
Hand wash
Do not bleach
Do not bleach
Do not tumble dry
Do not tumble dry
Do not iron
Do not iron
Do not dry-clean
Do not dry-clean
Stock advice Store your bag in a dry, ventilated place away from direct light.
Restricted use : Do not machine-wash.
Legal notice Discover trekking with FORCLAZ by DECATHLON at
How to use your product

Our commitments

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
Test Product 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.
Guarantee : 10 Years

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