Made for Our team of trekking enthusiasts has developed this sturdy 70L bag (+ 10L extra height) for men travelling autonomously in the mountains for several days Backpack that is durable and lightweight with a carry system that is comfortable for long expedition-type treks lasting several weeks. Eco-Designed thanks to the use of mass-dyed fabrics
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 %
The empty weight shown is that of our reference TREK 900 70+10L sample. There may be slight variations
Depth: 38 cm
How to pack a backpack?
Put your bedding at the bottom.
Place heavy equipment near your back (tent, stove, food).
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 waterproof jacket and fleece to hand.
In the pockets, place small items for the day (sunscreen, map, glasses...).
The water bag should be placed in the compartment that is usually placed the length of 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.
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.
Our engineers have conducted tests simulating the ageing of rucksacks.
These tests are conducted on the components, seams and finished product.
The results enable Forclaz to guarantee the tested bags for 10 years from the purchase date shown on the receipt
Compatible with 2x15L 1/2 moon storage bags.
Check out our storage accessories that facilitate the use of the TREK 900 bag here:
Store your bag in a dry, ventilated place away from direct light.
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.