Men's Mountain Trekking Backpack Trek 100 Easyfit 70L - ochre

Ref. : 8559696

Our team of trekking enthusiasts designed this easily adjustable 70 L backpack for men on multi-day mountain treks, seeking comfort and simplicity

Co-designed with users in the French Alps, this bag offers simplicity and comfort without compromising on its technical features. An eco-designed bag with its bulk-dyed polyester and recycled buckles.

Color: terracotta brown

Unique size
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Our services :

  • Free delivery for Decathlon brands orders above $399
  • All Decathlon products are eligible for lifetime return

Products benefits


600 denier polyester main fabric Polyamide base of bag 10-year warranty

Carrying comfort

Carry system for the male body shape. EASYFIT automatic back adjustment.

Multiple compartments

Internal compartments Front access + bottom access 5 pockets Water pouch storage


Water bottle holder Pole holder Rain cover


Back with aluminium bars to reduce pressure and allow the back to breathe

Easy hydration

Internal compartment for a water bladder (not included)


Men's Mountain Trekking Backpack Trek 100 Easyfit 70L - ochre
Men's Mountain Trekking Backpack Trek 100 Easyfit 70L - ochre
Men's Mountain Trekking Backpack Trek 100 Easyfit 70L - ochre
Men's Mountain Trekking Backpack Trek 100 Easyfit 70L - ochre
Men's Mountain Trekking Backpack Trek 100 Easyfit 70L - ochre

Technical information


Volume of 70 litres.
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 percentage points.


1.9 kg
The empty weight shown is that of our reference sample.
There may be slight variations.


Height: 65cm
Width: 30cm
Depth: 30cm
Compatible with 2x15L 1/2 moon storage bags

EASYFIT system

Our patented Easyfit system allows you to adjust the height of the back and tightness of straps at the same time by pulling on a single strap (on each side).
1. Put on your bag
2. Fasten and tighten the belt
3.Pull the straps (upwards)
And you're done!

How to pack a backpack

Put your bedding at the bottom. Place the heavy equipment (tent, stove, food) near to your back. Pack your clothes around these items. A ground sheet or tent can be placed under the flap or under the bag (add straps) if they don't fit inside. Keep a waterproof jacket and fleece to hand. Place the small items that you will need during the day (sunscreen, map, glasses, etc) in the pockets. The water bladder can be placed in the compartment generally provided down the back.

Why are our rain covers grey when some trekkers want them to be brightly coloured?

The grey colour is neutral and therefore uses less dye.
The component is made of BITON: this process allows us to lower our carbon footprint and reduce the consumption and water pollution in comparison to the coloured models.
These small measures demonstrate the commitment of Forclaz to improve the environmental impact of its products.

10-year warranty

Our engineers have conducted tests simulating the ageing of backpacks. These tests are conducted on the components, seams and finished product. Forclaz use the results to guarantee the tested bags for a period of 10 years, starting from the date of purchase indicated on the receipt

Complementary accessories

Check out our storage accessories that facilitate the use of the TREK 100 bag here:


10 years


1.86 kg


Product concept & technology

Product Composition

Main fabric 100% Polyester Lining 100% Polyester Yoke 100% Polyester Webbing 100% Polypropylene Bag cover 100% Polyester Coating 100% Polyurethane


Store your bag in a dry, ventilated place away from direct light.


All our backpacks are tested in use in the field by target users under the same conditions as they would experience in real-life use. 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 particular model was tested over a five-week period by trekkers in the Canaries, Pyrenees and the Mont-Blanc mountain range.

Approved By

Our customer-enthusiasts recruited through our DECATHLON Creation test platform: Join us at

Maintenance advice

Hand wash

Do not bleach

Do not tumble dry

Do not iron

Do not dry-clean

User reviews

Questions & Answers