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Mountain Bike 7L Hydration Backpack ST 520 - Turquoise

Sale price: 13.500 KD Regular price:
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Sale price: 13.500 KD Regular price:
Model: 8555901

Product Features

A photo of the Mountain Bike 7L Hydration Backpack ST 520 - Turquoise in use

Mountain Bike 7L Hydration Backpack ST 520 - Turquoise : This hydration backpack has been designed to keep you hydrated for MTB rides lasting up to 4 hours.

Go mountain biking for up to 4 hours with this water bladder: with 2 litres of water and a 7-litre capacity, this bag is the perfect companion for mountain bike touring.


A usable volume of 7L and a 2L water bladder: stay hydrated for 2 hours.

Multiple compartments

1 large pocket, 1 water bladder, 4 small inner pockets & 1 outer pocket


Adjusts with the shoulder straps, the waist strap, and the chest strap.

Carrying comfort

Back made of perforated foam & straps made with mesh for ventilation.

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Product Reviews

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1475 reviews

Mountain Bike 7L Hydration Backpack ST 520 - Turquoise
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Delivered a used pack!

Utterly disgusted to have taken delivery of a USED item - Water still inside the bladder and hose, with a dirty mouthpiece and hair/debris inside the pockets. Given the current pandemic which is spread by droplets of saliva this is honestly the worst experience I've had buying online. How this was not checked during the returns process is beyond me.

Good kit

Only used once so can’t really comment

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I love this bag so much that I don't only use it when I'm out on the MTB, I use it all the time on days out. It is the perfect size for keys, phone and purse, plus other bits and bobs. Sure you couldn't fit a change of clothes, lunch etc in it, but for a morning out or a ride on the MTB, it is the perfect size and it doesn't make your back all sweaty. It is very good quality, I am very happy with it.

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I cycle for about 5 to 6 hours each time 3 or 4 times a week and it holds my water snacks and repair kit very well.

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Brilliant design,however

A really well thought out pack. Just the right size for carrying a pump, multi tool and a few spares and room for a waterproof top, however the zip has failed on mine after not a huge amount of careful use

Thank you for taking the time to post a review of the bag. I'm glad you find it to be useful and practical. I'm sorry to read that the zip has failed. We provide a 2 yr warranty on all of our own brand items. Pleas return it to us if you purchased withing this period with your receipt and we will replace the bag for you.
Peter, Cycling Manager, DECATHLON
Better than camelbak

Purchased this for 30 mile plus mountain biking, This is the best designed hydration pack I have ever had. The bladder has a fold over and clamp design, which is far superior to camelbak screw tops, that easily crossthread and leak. Nice low profile discreet when worn. Enough pockets for mobile, repair kit, pump, food keys etc. Wore for 3 hours first try very comfortable. Tip:Rather than cleaning bladderevery time, just empty bag suck tube dry, wash mouth piece and bung in the freezer tube and all, then when you take it out just shake out small ice crystals and your ready to go. Just buy this you will not regret it.

Great hydaration back pack

bought this for when i go walking and its ideal ideal size and you can store a few things in it well

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Decent bit of kit

Cant complain for the money

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Brilliant bit of kit, especially for the price. Changed the (slightly) leaky bite valve, but other than that it's still going strong. Lots of useful and secure compartments.

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Great !

Just the right size and capacity. Easy to clean and fill etc

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This is a nifty (Great!!) buy

I was really surprised to see this superb wee bag for the price, its well put together and take more than I would have thought even with your camel bag full. Its ideal for a days walking, cycling or running and really comfortable. I usually buy Osprey or Berghaus when it comes to outdoor baggage but I was pleasantly surprised by this well priced piece of kit. Time will tell in respects to durability but as it stands, I'm glad I broke the mould. Plus I have to say, Decathlon have a great range of products and their prices and delivery schedules are top class.

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I got this when on offer at £9.99 which was great though I don't think I would necessarily stretch to £24.99 for the same. Even with the bladder full I can still get all the spares and tools I need to take within a 40-50 mile radius of home/base as well as a waterproof and spare jersey. I wouldn't want anything bigger.

Smaller than looks

The hydration pack is a bit smaller than it looks but is well made and enough for a couple of hours ride with minimal tools n spares.

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Not much room.

Hydration system seems good quality. There is not much room for spares and tools so best for short trips close to home/car.

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Great product

Bought this for £9.99 when it was on offer, and I'm happy to say that it's lived up to Decathlons proven high standards. Purchased this to run with rather than ride, and (so far) it's comfortable, sits securely without too much movement, and has a 'just right' capacity. I do have a couple of niggles with the design though. Whilst the primary compartment is a 'flip type' and double zipped, the secondary flip pocket is only single zipped, so it might be possible for this to work open and for things to fall out. The smallest pocket on the bag is a side zip, handy for a mobile, but none of the pockets have a headphone outlet, which is a notable omission. The bag does have some reflective details at the rear, not enough though in my opinion, but the inclusion of a clip for a light at the back is a nice touch. However, there are no reflective areas on the front at all. There isn't an option on the shoulder straps for clip on lights, except for the tube holder, which sits too high, or the chest strap. The main internal compartment doesn't have any segregated pockets at all, apart from the one for the bladder, whilst the secondary does have internal pockets, only one of them has a zip closure on it. It may sound as though I'm disappointed with the product, but the truth is quite the contrary. For the price, I'm very pleased with it, but I feel that the product could be improved as I've detailed earlier, and then it would be pretty much perfect!

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Additional Product informations



  • 100% Polyester

Main fabric

  • 50% Polyamide
  • 50% Polyester

How do i maintain my water bladder?

After each outing, rinse and dry the water bladder.To make it easier, use the cleaning kit with the bottle brush and a drying hanger (code: 5935596). It is important to clean the water bladder and tube.

Bring with you...

This hydration backpack allows you to store your phone, a pump, an inner tube, tyre levers or a repair kit, a multi-tool, a compact rain jacket and a cereal bar. The many pockets will help you keep everything organised in your bag!

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