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Mountain Walking Backpack 40 L MH100
A ventilated back, comfortable to wear with stomach belt. A 5-liter hat pocket, a sliding smartphone pocket on the front of the belt, a secret pocket inside the bag.
Free shipping over $49
Final Sale: No returns or exchanges
See our return rules
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Videos
Product Features

Carrying comfort
Thumb loops. Load adjuster straps. Stomach support belt.
Ventilation
Well-ventilated back (AirCooling label), which regulates back perspiration
Capacity
Volume: 40 L (2440 cubic inches) / Dimensions: H 25.2"; L 13.8"; D 9.8".
Multiple compartments
Pockets: 1 out, 1 inner, water bladder, 2 mesh side pockets,1 sliding waist pack
Abrasion resistant
10-year guarantee
Lightweight
2.4 lbs
Easy to open/close
The main volume has a quick-access front opening on the bottom of the bag
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Product Customer Reviews

Go for it.
would love bit of more zips
Comfortable and has everything you need for happy hike
It's a great backpack for traveling. Fits a lot of cloth and really easy to strap on.
Just the right size, and good quality
Very good quality and price
It is worth the price.
Very comfortable to carry and accommodates many things
Bag is good for very short trip to carry about 9.45kg. Weight less bag and not giving more pressure to the shoulder. Good.
Good
Went for a 7 day trip with this bag, bag is nice and spacious, it’s water resistance but go with rain cover if going to a place with heavy rainfall, it would be nice if they provide more pockets inside. Overall it’s a nice product to use.
Easy to use and the shoulder pad is awesome
good product
Using decathlon products from last 2 years but i never seen product like this..! Weight management and shoulder belts giving issues while hiking getting all weight in lower back ..! If you want to save your back while hiking or trekking i repeat never buy this bag...!
Hello Mahesh,
Thank you for taking your time and providing us with your feedback about our product. We are sorry that the product has not been up to your expectations and we apologize for the inconvenience.
We would request you to please visit your nearest Decathlon store and get this product physically checked so that our store team can help you with the best possible solution.
Also, you can write back to us with the details about the exact issue and share some images of the product with us so that we can check them and help you with the right possible solution.
We stay available for any other queries related to the products and services.
Rishabh
Harness Slipping from left shoulder
Additional Product Information
Composition
Main fabric
- 100% Polyester cationic
Lining
- 100% Polyester cationic
- 10% Spandex
- 90% Polyester cationic
Coating
- 100% Polyurethane
Foam part
- 100% Polyethylene low density
Laboratory testing
We carry out laboratory tests to validate all component parts: fabric, buckles, straps, foam and zippers. For example, for fabric: resistance to wear, tearing, colorfastness under UV rays, washing, waterproofing. A final test on the finished product simulates the kind of treatment to which it will be subjected over several years, to assess the strength of the assembly: the backpack is weighted, then placed on a dummy, which then reproduces the movement of fast walking over thousands of cycles.
10-year warranty, technical partnership
The heavy stitching research and development department, Quechua's partner for researching and testing its components and assemblies, conducted tests simulating backpack aging. The tests focused on components, seams and the end product. As a result of these tests, Quechua can guarantee all bags tested for a duration of 10 years from the date of purchase indicated on the sales receipt.
10-year guarantee, conditions
The guarantee covers any backpack faults, except those caused by normal wear and tear and improper use. This special 10-year guarantee will only be granted upon presentation of the product and sales receipt. If the product is covered by the guarantee, it will be repaired or exchanged free of charge. This commercial warranty does not exclude applicable legal warranties depending on the country and/or State.
How is volume measured?
The volume of each backpack is measured using a standardized method: we fill the main compartment as well as each pocket with little balls. Then we empty these balls into a graduated container, which gives the equivalent volume in liters.
How do i adjust my backpack?
1 - Loosen all the straps (straps, hip belt, load adjuster straps). 2 - Put the backpack on. 3 - For backpacks with a capacity of 50 L or more, place the hip belt correctly (it should sit over the pelvis) and tighten it. For smaller backpacks, the belt should be placed around the waist. 4 -Tighten the shoulder straps. 5 - Adjust the load adjuster straps as needed.
How to pack a backpack?
Put your bedding at the bottom. Put heavy gear near to the back. Pack your clothes around these items. Keep a rainproof jacket and fleece close at hand. Place small items for daily use (sunblock, map, glasses, etc.) in the pockets. If carrying a hydration pack (water bladder), this should be placed in its special pocket along the back.
Environmental measures
The environmental impact of the product is calculated over the entire lifecycle of the product using different indicators. A global ABCDE rating is provided to help you easily identify products with the best environmental performance by comparing products of the same type with each other (T-shirts, pants, backpacks, etc.). Decathlon is a voluntary participant in this environmental labeling initiative. For further information: http://sustainability.decathlon.com/
Origin
Imported
Product testing
All our models are tested by users representative of our target market in conditions identical to those you encounter yourself when using them. We believe that carrying out 'real-life' testing is the only way to design and continuously advance the technical relevance and design of all our Quechua products.
Storage instructions
Store the backpack in a dry place.
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
-
Research and development
delivers high-quality cost-effective products
-
State-of-the-art production processes
minimize manufacturing costs
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Optimized supply chain
reduces retail prices
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Minimal retail footprint
lowers overhead and indirect costs

Mountain Walking Backpack 40 L MH100
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Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
