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Forclaz Trek 900 Symbium, Hiking 70+10 L Backpack, Men's

Sale price: $179.00 Regular price:

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.

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Sale price: $179.00 Regular price:

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Model: 8492336

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Product Features

Forclaz Trek 900 Symbium, Hiking 70+10 L Backpack, Men's | Our team of backpacking enthusiasts has developed this sturdy 70 L bag (+ 10 L extra height) for men traveling 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.

A photo of the Forclaz Trek 900 Symbium, Hiking 70+10 L Backpack, Men's in use


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


2 water bottle holders Pole holder Rain cover Tent holder Multi-hook straps


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


Bag lining and rain cover made of bulk-dyed polyester. (Dope dye)

Easy hydration

Internal compartment for a water bladder (not included)

Product Lifestyle Image Gallery

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Forclaz Trek 900 Symbium, Hiking 70+10 L Backpack, Men's,carbon gray 

Forclaz Trek 900 Symbium, Hiking 70+10 L Backpack, Men's,carbon gray 

Forclaz Trek 900 Symbium, Hiking 70+10 L Backpack, Men's,carbon gray 

Forclaz Trek 900 Symbium, Hiking 70+10 L Backpack, Men's,carbon gray 

Forclaz Trek 900 Symbium, Hiking 70+10 L Backpack, Men's,carbon gray 

Forclaz Trek 900 Symbium, Hiking 70+10 L Backpack, Men's,carbon gray

Product Customer Reviews

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Forclaz Trek 900 Symbium, Hiking 70+10 L Backpack, Men's,carbon gray
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good value

Works well and can take a lot of stuff

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Great back pack for hiking

Good materials quality design Not a single loose stitch

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Hiking / trekking pack

9 massive pockets so lots of room for everything. adjustable everything like every strap etc. Hydration capable. Pack cover included good for three days plus in the wilderness.

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so much space! great versatility! Wow!

Bought this for a multiday tramp in the mountains overseas followed by tour around some towns. As a tall woman、 I found no problems carrying this around and it gave me bonus room compared to the women's model. The adjustment straps、 especially the belt ones were thoughtfully layed out and easy to tighten and loosen. A great feature is the detachable top that can be converted into a shoulder bag if you want to dump the rest of your gear at camp or in a hotel and explore carrying valuables etc only (in mine i fit a dslr、 a kindle、 a book and a nintendo). The interior pouch is perfect for camelback hydration bladder. The side pockets are brilliant and tough and there are smaller pockets on the waist belt! I was able to carry camping equipment、sleeping bag some clothes and had space to fit in sizable souvineers too!

Low quality

Zipper broken after few weeks

Perfect back pack. Ill explain some missing detail

Bought this to replace a cheap '65 + 5L' backpack from Amazon. Always knew it was not 70L. Bought this (70+10) over the 90+10 thank god I did, its a big old backpack. but This is the perfect backpack, it literally has all the bells and whistles. Yet to test out and about but I have fully loaded it so I will explain below. In the top you have your pouch for rain cover, theres room in there for your rain jacket also, on the underside of the lid there is another zip pocket, so first aid kit, headlamp etc in there. Also in there is a zipped mesh pouch for phone wallet and a clip for keys. The 2 water bottle holders is perfect without removing other handy features such as 2 pockets on waist belt. Waist belt is thick and sturdy and does not dig in. Plenty of adjustment for shoulder width, height, waist and chest. Main compartment is absolutely huge. With everything I need in there for a hike in comfort which doesnt fit in most medium sized bags there is plenty of room upwards If I needed it. So main compartment has large synthetic sleeping bag, tent, clothes, poles and pegs, food sack, frying pan, sleeping mat, hydration bladder and stove set. jacket, waterproof trousers. Tarp, rope, fold out chair. Main side pockets quick access stuff like toiletries, spade, snacks, light, multitool etc Then still 2 mesh pockets with straps spare for light camp trainers or extra poles, and also trekking pole holders to the side. Foam sleeping mat underneath the bag. Few things hanging off the front tabs. All this comes in at around 12KG and when i set it up on my back correctly I literally did not feel any heavier. Was abit dubious about a framed backpack for the extra weight but it is true, when something fits properly you can definitely carry more. Really looking forward to taking this out. Cannot recommend enough for (initial) comfort and storage and how well thought out it is. If anything changes when I can take it out I will be sure to update



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Good bag, but The paddling in The belt are really cheap and poor. Thinking about return The bag beacause of The paddling, so bad.

Best Bag I've Bought

Extremely comfortable with lots of options to spread loading when carrying heavy. Ability to adjust the height of the shoulder straps is great as I'm quite tall. straps on the bottom are a good addition to carry a tent or something large on the outside of the bag, with the waterproof cover able to cover this aswell. Space inside is huge with a great amount of extra pockets and the zip to open the front makes everything in your bag accessible without having to drag the whole lot out of the top. Pockets for waterbottle being tilted is a great ergonomic feature, making it easy to access.

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Spacious and light weight

Very spacious and light weight which is good for camping

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It's a awesome product.. easy to carry with full of bag

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Good Product

Package received as opened & very poor packing. Backpack is looking good but cost bit high.

Good Product

Product is good but it comes as opened which is not understood. Very poor packing, I had paid extra amount for packing and transportation.

Trek 900

Product is excellent but price too high. Packing was very pathetic and delivered as opened. When asked delhivery boy, he said it always happens in transportation which is not understood by me.

Best Backpack I Have Used In 10 Years

Of the different backpacks I have come across in the past 10 years this is the best backpack in the price segment in India. Built like a beast and is very comfortable on the back despite heavy loads. I am 5'11" tall and have used it for some really long treks & expeditions like Pin Bhaba & Kang Yatse (Marka Valley) with loads above 20 KG. Recommended if you are a regular trekker who treks alpine style or needs lots of space.

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Size Guide

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Additional Product Information


Main fabric

  • 100% Polyester cationic


  • 100% Polyester cationic


  • 100% Polyamide


  • 100% Polypropylene
  • 65% Polyamide

bag cover

  • 100% Polyester cationic


  • 100% Polyurethane


  • 100% Ethylene vinyl acetate


Extendible volume: 70 L + 10 L extra (4271.7 in3 + 610.2 in3) thanks to the adjustable height of the bag top. The volume of each backpack is measured using a standardized 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 liters, with a margin of error of just a few %


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


Height: 30.3", Width: 18.9", Depth: 15"

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 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 gray when some trekkers want them to be brightly colored?

The gray color used for the covers of our backpacking 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 colored 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 hiking. The symbium system lets you say goodbye to the swinging effect that tires out trekkers.

10-year warranty

Our engineers have carried out simulated aging 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 2 x 15 L 1/2 moon storage bags. Check out our storage accessories that facilitate the use of the TREK 900 bag here:



Product testing

All our backpacking 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.

Storage instructions

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

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

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    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual