Men's Trekking 50+10L Backpack MT900 UL

NON-MEMBER : $1,299
Ref. : 8642599

FORCLAZ designed this ultralight & robust bag for demanding users looking for performanceIdeal for completing 2 stages of a long-distance hiking trail in 1 day.

Thanks to the design choices, FORCLAZ reduced the weight of this bag to just 1.3kg without compromising on durability.The bag can be precisely tailored to your needs thanks to the multi-purpose straps

Color: storm blue / abyss blue

Unique size
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  • Free delivery for Decathlon brands orders above $399
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Products benefits

Carrying comfort

Carrying up to 12kg, suitable for men.Ventilated back, adjustable height

Multiple compartments

Full height access to the central section, 7 pockets (cent.sect:3, lid:2, belt:2


Pole holder, rain cover, side pockets which can be accessed when walking

Abrasion resistance

Main fabric in 100D RS polyamide, reinforced bag bottom (210D RS)


Reinforced frame with mesh reducing pressure and letting the back breathe.

Easy hydration

Internal compartment for a water bladder (not included)


1.3 kg. The empty weight indicated is that of our benchmark sample


Men's Trekking 50+10L Backpack MT900 UL
Men's Trekking 50+10L Backpack MT900 UL
Men's Trekking 50+10L Backpack MT900 UL
Men's Trekking 50+10L Backpack MT900 UL
Men's Trekking 50+10L Backpack MT900 UL
Men's Trekking 50+10L Backpack MT900 UL
Men's Trekking 50+10L Backpack MT900 UL

Technical information


Height: 65cm,
Width: 35cm
Depth: 35 cm


1.3 kg All inclusive.

Weight of the removable rain cover 100g.
Weight of the removable lid 100g.
i.e. 1.1 kg in simple mode!

AIR design

Inspired by its sister, the MT500 AIR, this bag replicates many of the features of its ventilated back structure with a mesh fabric so that the back can breathe more and dry quickly.


Volume of 50L with a +10L extension. The volume of each backpack is measured using a standardised 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 %.

How to pack a backpack?

Put your bedding at the bottom. Put heavy gear (tent, camp stove, food) near your back. Store your clothing around it. A groundsheet or tent can be placed under the flap or under the bag if there isn't room inside. Keep your waterproof jacket and fleece to hand. Place small items for daily use (sun cream, map, glasses etc.) in the pockets. The water bladder can be placed in the compartment provided down the back.

How to use the multi-use straps?

The new MT500 AIR and MT900 UL series of trekking backpacks have two straps with open aluminium buckles (on the lower part of the bag). These straps let you hook on a tent or mattress under the bag or on the barrel. If not in use, these straps can be stored (by pushing them inside) in the hidden pocket intended for this or detached and used elsewhere with the lark's head knot buckle.

Complementary accessories

To make it easier to use your MT900 UL bag, check out our storage accessories, our repair buckles and hanging straps. check out our accessories

Recommended carry weight

According to the project for which this backpack was designed, we recommend you don’t load it above 12 kg. Then you can benefit from all its features. Moreover, it’s not recommended to carry a load greater than 20-25% of your own weight and put too much pressure on your back.


Main fabric in 100D RS polyamide (ripstop = additional resistance to tearing), reinforced bag bottom (210D RS)


10 years


Product concept & technology

Product Composition

Main fabric 100% Polyamide Lining 100% Polyamide Yoke 100% Polyamide 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 field-tested by users who represent the target market in conditions identical to those found in typical 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 passionate customers recruited through our platform on our website
Discover trekking, rent your equipment and discover our products and our advice on our website

Maintenance advice

Hand wash

Do not bleach

Do not tumble dry

Do not iron

Do not dry-clean

User reviews

Questions & Answers