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Designed by our team of enthusiasts, this 10 L bag provides you with an easy way to carry all your mandatory gear on ultra trails of UP to 80 km.

Want to make nutrition and hydration easy on your trail run? Try our practical, lightweight bag, to carry everything you need and keep all your gear to hand while running.

A photo of the 10 L TRAIL RUNNING BAG UNISEX in use


Kit yourself out: 10 L storage capacity in front and back pockets!


6 front pockets (nutrition and soft flasks) and 4 back pockets for gear.


More lightweight: your bag weighs on 285 g without the water bladder.

Anatomic design

A bag suited to your needs: choose between sizes XS/S, M/L and XL


A bag that stays in place: 2 Side elastics, 3 adjustable front straps

Ease of use

Easily store gels, bars, smartphone and two 500-mL flasks in the front pockets.

Easy hydration

Stay hydrated: 1 L water bladder included, storage for 2 soft 500 mL flasks.


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Product Reviews

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36 Reviews
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Hydration vest

First run completed, comfortable, light and fitted my equipment in front pockets. Bladder us good quality. 500 ml soft flasks to big, I would suggest 350 ml. Happy with purchase and better than many others double the price.

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Very light and enough space to take your jacket and other things.

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Nice pack

Very nice, very light and sufficient volume for 50k+ trail run

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Hello Man,


Thank you for supporting Decathlon Hong Kong and your feedback with our product! We are happy to hear that you have had a positive product experience with us. 


We will keep maintaining our service standard to give you a better purchasing experience.


If you have any more questions, comments, please feel welcome to reach back out as we would be more than happy to share and assist. Hope to see you around soon!

Charles Lee

Decathlon Hong Kong Running Team

Perfect for the job

The fit and weight mean you don't even notice it's there. Breathable straps don't cause hot spots and the hydration system is easy to use. Perfect for long runs.

Great value, ideal for day hikes

I've used Camelbak and North Face day packs for my shorter hikes, usually to carry hydration bladder, some snacks, packable jacket, essentials and phone. But not that many have pockets at the front for me to easily access my phone. This one has multiple ones which makes it very convenient. It also fits close to body without a lot of dangling straps. The price is excellent value for what you get. I am pretty tall 177cm and thin; I got size M according to the size chart and it fits fine.

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Hello Patricia,

Thank you for supporting Decathlon Hong Kong and your feedback with our product! We are happy to hear that you have had a positive product experience with us. 


If you have any more questions meanwhile purchasing, don't hesitate to find our sport leaders, they would like to help you and offer some recommendations when you need!

Also, please feel welcome to reach back out as we would be more than happy to share and assist. Hope to see you around soon!

Have a great week ahead, stay safe and strong!

Charles Lee

Decathlon Hong Kong Running Team

Handy and light

Handy and light during long runs.

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Lovely fit, great product, I have 3, 2 in this size and 1 larger

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Running back pack

Great product and perfect for my runs, thank you.

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Excellent Vest For Long Haul

I purchased this vest because I am a person that packs like I was going to have a trip around the world. In my recent 100km run here at the mountains of the Philippine corilleras, it served me well. It swallowed powerbanks, first aid kit, food and water in it's main bag compartment. The side mesh storage pockets were well placed and convenient to reach into for those little items like alcohol spray, gels and even the headlamp. The only problem with the main storage is that it doesn't have compartments save for only a zip pocket in the inside for your phone or wallet, a nice touch though. I would recommend using zip lock bags to organize your stuff because you can pretty much throw anything in there and would be searching for it if you didn't organize it. I used the bag without the supplied hydration bladder by the way. As for the fit, it was great. Being 6ft tall and quite well built, there was little or no bouncing when I was running. The only problem with it is the collar section of the bag, I wish it was a bit lower so it wouldn't rub on the neck, specially on the side. I had to use a neck gaiter to pad the collar. Overall, it's a great pack to have for those LSD days.

Dennis Garret
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Very compact yet light to carry

Highly durable & compact bag. I use it for my trekking & walks all the time. The material is also very good in quality. The size can be quite deceiving as I'm able to put in a lot of stuff into the bag. It's also light & doesn't strain my back.

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Hello Sharin,

Thanks a lot for taking time to review the 10L Trail Running Bag Unisex.

We are very happy to hear that the Running bag has met your expectations and we are glad to know what it can store more than what it seem to be :)

Thank you for rating excellent for the bag, and we look forward to receive more reviews from you. Thank you for shopping with Decathlon.



Good quality. Very satisfied.

Stephen John
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Harga berpatutan, design yang menarik dan selesa bagi orang Asia

Mohd Redzauddin
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Dear Redzauddin, thank you for your time in leaving us with a 5-Star rating on our product. We are glad that we managed to delight you with the standards of our product. We really appreciate your loyalty with Decathlon. Please let us know if there is anything else we can improve on in the future. Thank you once again for your time and we hope to serve you again soon! :)


Love it!

The backpack is very light weight, very functional with many compartments and pockets for essential items. It fits really snugly (I’m as size 36, got XS/S). Highly recommend.

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Hello Yvette,

Thank you very much for taking time to share this excellent rating with us! We are happy that the the 10L Trail Running Bag Unisex - Blue/Black works for you.

Thank you for shopping with Decathlon, and we look forward for you to share more reviews with us :)


As a Day Bag Too

Used this for a recent day trek. Managed to fit in the 750 ml hydration pack, towel, extra shirt, knee caps, first aid, snacks, power bank, head lamp etc. So glad that it clings tightly on my back unlike a back pack and thus makes climbing down the slopes easy. Just wished some of the front pockets were zippered to hold mobile. Am looking forward to use this under my rucksack (just as a hydration bag) on my next trekking trip. Let's see how it works.

Excellent purchase

Great bag with lots of handy compartments. Can use the bladder plus i bought 2 drink pouches with straws to put in the pockets on the front. Really comfortable and dont know its there when running. Could be used for other sports to such as cycling.

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Product information


Main fabric

  • 100% Polyester


  • 26% Elasthane
  • 74% Polyester

Back fabric

  • 20% Elasthane
  • 80% Polyamide


  • 90% Polyester
  • 10% Polyurethane

Choosing your size

New Fit, measure your waist size at the belly button:XS/S: 62 cm to 72 cmM/L: 73 cm to 83 cmXL: 84 cm to 99 cm

10 litres and 10 pockets to carry your essentials on a trail run.

There are 6 pockets at the front so you can reach your essentials in a single move:- 2 pockets for 500 mL soft flasks- 4 mesh pockets for gels, bars and collapsible beakerThere's a secure pocket at the back to store your valuables (smartphone, keys, survival blanket), a main pocket to store your clothes and headlamp, and a big mesh pocket to keep your rain jacket always handy.

A bag designed to keep you hydrated on trail runs

With space for a 1-litre water bladder on the back (included, attached by hooking on) and 2 front pockets for 500-mL flasks, this bag allows you to carry up to 2 litres of water in total.Considering that you drink an average of 500 mL of water per hour while trail running, that gives you 4 hours of autonomy. Enough to give you peace of mind between aid stations!

So, what about the water bladder?

Your bag comes with a one-litre water bladder included. It's suitable for temperatures ranging between -20 and +40°C, for water: no milk, no alcohol, and no putting it in the microwave ;)As to the tube, you can cut it to whatever length you like!

A bag so light you don't even notice it

In trail running, every gram matters! Weighing 285 g when empty, your bag is truly lightweight.And to fit your personal requirements, it's available in 3 sizes (XS/S, M/L, XL) and is easily adjustable:- You can choose the height of the 3 front straps- Thanks to its 2 side elastics, the bag stays so stable you'll forget you have it on when trail running

A design loaded with details, to make your life easy

Trail running puts you in situations of extreme fatigue. That's why we've designed a bag that makes every move easy.- The water bladder tube is clipped on, so as to remain near your mouth at all times.- The mesh pocket at the back allows you to reach your rain jacket in one move.- The 110 dB safety whistle is incorporated into a front pocket.

Never run without your poles?

Along with the whistle - mandatory in many races - which is located in the little chest pocket (hence near your mouth!), this bag also features 2 elastic straps on each side to attach your 3-section trail running poles.

Gaëtan, kalenji product manager, introduces his team of trail running enthusiasts:

"For us, it's a matter of pride to design and test our products ourselves. We wanted to make a bag we'd be proud to wear. I took part in 6 or 7 trails last year from China to the OCCⓇ in Chamonix.

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