Hydration / Gear review

Osprey Hydraulics 3 Litre Hydration Bladder

86/ 100Australian Hiker rating
Osprey Hydraulics 3 Litre Hydration Bladder

The scorecard

How it rated

Original assessment converted to /100 with equally weighted criteria.

86 / 100 Overall score
Criteria Weight Score / 10
Value for Money 25% 9.2
Usability 25% 8.8
Weight 25% 8.4
Durability 25% 8.0

We Like

  • Love the magnetic chest strap clip. The nozzle is always easy to find
  • Having the bladder drinking tube easy to find means that I will drink more, particularly on hot days
  • Perfect size for me lasting all but the hottest and longest days. This is one of the biggest water bladders on the market.
  • Easy to fill. This current version fill system replaced a cumbersome fill point on the old model
  • You don’t have to fill this bladder all the way up if doing a shorter walks

We Don't Like

  • The pack attachment point that holds the bladder in the correct position is a weak point
  • The magnetic clip will pick up dirt if the environment is high in iron
  • Bladders in general are best used in packs that have dedicated hydration pockets
  • The bite valve on this or any other bladder will need to be replaced occasionally

Osprey Hydraulics 3L Reservoir Review

There are two main types of hikers in this world as far as drinking water on the trail; bladder drinkers and bottle drinkers. Talk to either type and they will usually try to convert you to their point of view. Both Gill and I are bladder drinkers and in my case I just find that I will drink more water when I use a bladder as it’s just so easy to access. When you have to either take your pack off or reach around to the side pockets to access your water bottle, out of habit you will just drink less. No a problem on short hikes or on those days where its cool but on long and/or hot days this can greatly impact your ability to keep on hiking. On my biggest every summer day (58km/15 hours) I drank eight litres of water and the bladder just made this so easy.

There are a number of bladder brands on the market but I have found that I like using the Osprey water bladders particularly because of the magnetic clip that attaches the nozzle to chest clip. This means that the nozzle is always easy to find in addition (in this latest version) to having an easy to unclip detachment point half way along the tube which makes it very easy to remove the bladder out of the pack.

This current version of this bladder also has a new fill point at the top that replace the large screw cap that was previously located on the front of the bladder and that created problems with leakage for so many hikers, particular if you had smaller hands and struggled to get is done up correctly.

This bladder comes in a range of size ranging from 1.5-3 litres but I prefer to use the 3 litre version for longer hikes and fill up only as much as I need. The additional weight in carrying a bladder that you haven’t filled is not that much extra.

Like any product there are negatives on this bladder with the main one being that the attachment point to hold it at just the correct height in the pack  is a weak point that can fail so I end up using a small piece of ribbon which works well if thats the case. The other downside is the magnetic drinking tube clip that I love so much will attract grit if you are hiking in environment with soils that are high in iron content. A minor inconvenience but you will need to wipe down the magnetic clip every so often to remove the grit. To limit this don’t drop the drinking tube into the dirt. The next downside is that ideally you only want to use drinking bladders when you have a dedicated bladder pocket on your pack  (either internal or external) otherwise you run the risk of accidentally puncturing the bladder if you are rough with your gear (Rare occurrence) or you may need to unpack your pack to refill the bladder. The final downsize is that when using water bladders you will need to replace the soft rubber bite valve on the bladder every so often. I found on my Bibbulmun track hike the bite valve lasted the five weeks, but only just. If using this for day hikes this may only need to be once or twice a year. To be on the safe side carry a spare on long hikes, just in case.

While there are cheaper water bladders on the market I just love this model and will be hard pressed to replace it with something else.

Best Uses

  • For big drinkers, or on those long hot days

Other Versions

Disclaimer

This review was done with product purchased from a retail store by Australian Hiker

Last updated

25 June 2026

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