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Osprey Packs
Hydraulics Hydration Reservoir

5 out of 5 stars
3 Reviews

Out of Stock

Don't worry though, we have a lot more Water Reservoirs in stock than that.

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Hydraulics Hydration Reservoir

Custom-fit suspension systems are Osprey's bread and butter, so it makes sense that the Hydraulics Hydration Reservoir is shaped with a rigid backer plate to prevent any interference with how your pack fits and carries. Additionally, the durable TPU reservoir material keeps water tasting exactly the way it should, and the bite valve keeps the hose secure when you're cruising up the trail.


  • A hydration bladder especially designed for your trekking pack
  • BPA- and phthalate-free materials deliver a fresh, clean taste
  • HydroStatic backer plate ensures that the bag keeps its shape
  • Bite valve is easy to drink from and won't likely leak
  • Hose shut-off valve seals your bladder during travel
  • Item #OSP006W
TPU (thermoplastic polyurethane)
[2L] 70oz, [3L] 100oz
bite, magnetic
[2L] 14 x 6 x 3in, [3L] 15 x 7 x 3in
Claimed Weight
[2L] 10.6oz, [3L] 10.9oz
Recommended Use
hiking, backpacking
Manufacturer Warranty

Overall Rating

5 based on 3 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 3 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

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5 out of 5 stars

January 9, 2022

Clean water coming your way

I've used it several times

Brought this 3L on an 18 mile backpacking excursion for a group of 4. Broken down it is easy to carry and doesn't occupy much space. I found it easy to fill (fortunately with a river) and set up. It provided immediate access to clean, crisp drinking water, everyone was able to fill their bottles from it. And best of all - no one got sick!

5 out of 5 stars

August 7, 2020

Best one I?ve ever used

I've put it through the wringer

The magnets are super convenient, The bite valve is really comfortable, The handle is great, and it?s super durable! The zipper top one time got stuck and it literally took three guys to get it off! But there is no damage it was just a little dirty.

Dave S
5 out of 5 stars

June 4, 2020

Osprey + Sawyer Micro = Ultra-lightweigh

I've used it once or twice and have initial impressions

I bought this pack specifically for ultra-lightweight hiking in the PNW. The are numerous water sources and the smaller size (2L) combined with a Sawyer Micro in-line filter allows me to quickly collect untreated water from streams in the reservoir and filter the water as I drink it.

Michael G