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Osprey Hydraulics™ Reservoir (2 litre)

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Retail Price £26.00Was £23.40

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A fluid reservoir designed to integrate perfectly with your Osprey rucksack.

Carrying water should never compromise the fit, comfort or stability of your backpack. The Osprey Hydraulics™ reservoir integrates perfectly with your Osprey pack, with superior technical features and the best pack-to-body fit and performance available.

  • Easy to handle when filling and loading into a pack
  • Contoured backer plate preserves pack fit and comfort
  • Magnetic bite valve attaches to sternum strap
  • Metallocene PE high strength & taste free film (BPA & PVC free)
  • Anti-microbial formula prevents bacteria & mold
  • 3/4 turn cap makes for a very quick and secure open/close
  • Wide mouth opening provides easy fill & access for cleaning
  • Lightweight, low profile handle for easy fill and pack insertion with dual sided hose exit
  • Direct welded HydroStatic™ plate maintains low & wide reservoir profile
  • Anatomical shape keeps water weight steady and close to the body
  • Magnetic bite valve with included sternum strap magnet
  • Built in 180 degree pivot shut-off valve
  • Flexible 1/4”/6.35mm hose for fast water flow
  • Capacity: 70oz (2 Litres)
  • Weight: 11oz (30g)
  • Size: 17" x 9" x 4" (44cm x 23cm x 9cm)


The Hydraulics Reservoirs use Osprey's HydroStatic™ backer plate for a low, wide profile - it shapes the reservoir to ensure pack fit is preserved for optimal stability and comfort.

Reviews (4)

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  • 1 out of 5
Follow-on review, 30 October 2015
By KINDERgates (Sheffield, UK)
As a follow-on to my previous review, it seems as though the Osprey water reservoir has a manufacturing fault, which finally explains why, on a number of occasions since I bought it, my expensive rucsac has ended up soaking wet around its base - along with all my clothing around my lower back and backside (to the point where I can wring large amounts of water out of these garments). This completely ruins my walk, and is unacceptable in any product, let alone such an expensive one. The problem seems to be around the lower seal (where the tube exits the bag), and explains why even a small amount of water in the reservoir can result in a soaking for me. Very disappointed with this over-priced product, and this experience has really put me off buying any further Osprey products.

  • 2 out of 5
Not so good, 29 September 2014
By Gary (Oxford)
I previously had a 'Source' one of these, and would have got another, but needed one fast.

This has a few problems:
1. As previous review said, the top cap can appear to be well tightened up, but isn't and leaks. You need to turn it upside down and test it.
2. There's no cover on the bit you drink from, so it dangles in the mud when you put the bag down.
3. The pipe can be very easily pulled off the bottom of the sac, resulting in everything in your bag getting soaked.

Buy a 'Source' instead.

  • 5 out of 5
Best reservior I've ever had -, 10 July 2014
By JD (York)
Much better product than camelbak, hydrapak and all the rest!
Giving this a 3 out of 5 - the above user has clearly never used the competition.
Well thought out, very tough and simple to clean!

  • 3 out of 5
Well-made, but not perfect., 19 April 2014
By KINDERgates (Sheffield)
I bought the 3 litre version of this hydration bag to use with my Osprey Talon 33 sac, and it is solidly-built, and has the advantage (over competitor's hydro bags) of having a rigid plate on one side, which makes filling a lot easier (although you could still do with 3 hands..). Like many of these bags, it has several design flaws - like the fact that you can't fill it to anywhere near full capacity and read the gauge at the same time, as water will come pouring back out of the huge filling hole if you do; you need to lay it flat, meaning that the gauge is useless. A word of warning to the uninitiated; it is possible to unwittingly cross-thread the big hole-cap, and the only way you'll know you've done so is when you lay down or invert the sac and water comes pouring out around the un-made seal. I regularly carry about £2000 worth of camera and other gear, and I came very close to having a very expensive walk! Expensive and by no means perfect, but overall, the best hydration bag I've had (and I've tried/seriously road-tested several!...).



At GO Outdoors we offer a wide range of delivery options to suit your needs. You can come into one of our fantastic stores to collect or have your items delivered to you at your convenience.

Please see our delivery page for more information. Restrictions apply. Prices and delivery times may vary for remote or rural parts of the UK. Working days are Monday-Friday, excluding UK Bank Holidays.

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Check stock and reserve items at your store for collection the same day. If the items are available for home delivery, then we can arrange to have them delivered to your local store for the following day

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Order by 8pm Friday for delivery on Saturday (Not available for NI, Channel Islands or Highlands)

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International Delivery<span style='color:#ADADAD'>International Delivery</span>
International Delivery will take between 7 - 10 days and you are liable for any local duty and/or taxes


Returning an Item

If you receive your order and it is not what you are expecting you can return it back to us within 30 days of receiving the goods for an exchange or refund (including the delivery charge if you return it within 14 days).

You can return your items by using Collect+ or by taking them to any GO Outdoors store (except Hathersage) using your delivery note as proof of purchase.

Unfortunately, orders paid for using PayPal cannot be returned to store and we are currently unable to offer free returns as we offer free delivery over £50 as standard.

See our returns policy for more information.