Item # os5hydres218zz-osprey-camping-accessories

Osprey Hydraulics Reservoir


38.00 $38.00 $40.00 (5% OFF)

Description: Osprey Hydraulics Reservoir

2 L: Osprey’s Hydraulics® 2L Reservoir by Hydrapak is ideal for large volume packs and long duration activities. The HydroStatic backerplate provides structure for easy loading into a full pack and maintains a flat profile. Thoughtful design makes filling, cleaning and most importantly staying hydrated on the trail easier than ever. All parts are BPA-free, phthalate-free, lead-free, guaranteed. All materials are certified food safe according to FDA and EU regulations.

3 L: Osprey’s Hydraulics® 3L Reservoir by Hydrapak is ideal for large volume packs and long duration activities. The HydroStatic backerplate provides structure for easy loading into a full pack and maintains a flat profile. Thoughtful design makes filling, cleaning and most importantly staying hydrated on the trail easier than ever. All parts are BPA-free, phthalate-free, lead-free, guaranteed. All materials are certified food safe according to FDA and EU regulations.

Key Features of Osprey Hydraulics Reservoir
  • Material: TPU Flim
  • Hydrostatic Backerplate - Hydrostatic backerplate provides structure to shove a full reservoir into a fully loaded pack and maintains a flat profile.
  • Slide-Seal - Easy Slide-Seal top opening, seals watertight and provides wide access for easy filling and cleaning
  • Pour Shield - Pour shield extends the collar to ease filling in shallower sinks and control pouring into pots or bottles
  • Carry Handle - Carry handle allows easy reservoir management and filling
  • Magnetic Bite Valve - Magnet clip attaches to the reservoir hose and pairs with the included sternum strap magnet for easy water access and hose management
  • Hydrapak Blaster - Hydrapak Blaster bite valve offers fast, smooth water flow with a twist on/off switch
  • QuickConnect System - The QuickConnect system allows easy removal/filling of the reservoir and filtering in the backcountry
Size 2 L 3 L
Height (in) 14 15
Width (in) 6 8
Depth (in) 3 3
Volume 70 in³ / 2 L 100 in³ / 3 L
Weight 0.66 lbs 0.68 lbs

2.9 / 5.0
48 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
My favorite bladder
This reservoir was easy to figure out. You remove the slide and open the top like a bag of chips opens. I don't understand where "Mtb Bear" had the confusion. I love how the bladder has the hard back. I almost forget it's in my pack.
May 16, 2016
Mt. Baldy, California
Originally posted at
Rated 3 out of 5
New design may take awhile to get used to.
Just got tested this today after getting a new pack as a warranty replacement. This is my third generation of Osprey's aqua bladder which started with the Nalgene one. I kind of like the zipper top for filling, it seems like a clever design but will take a few uses to get used to. Two things that I immediately do not like. 1) The angled mouth piece makes it impossible for hands free use on a bike. 2) There is no loop on the bottom of the bladder to hang dry overnight. I use my pack almost daily and usually hang the bladder next to the pack to drip dry between uses. Removing the loop that was on previous versions seems like an unnecessary oversight.
June 6, 2016
Davenport, Iowa
Originally posted at
Rated 5 out of 5
Best bladder out there..
This is the best bladder I've ever used. Better than previous Osprey models and bladders from other major companies. I have had the original design of this bladder with the clip instead of the hole for at least two years and haven't broken it. How do all these people brake it? It's a plastic clip. Take care of it and it will take care of you. I ride very hard on both mountain and road bikes 4-6 days a week and this bladder has seen a LOT of use. Mine doesn't taste like plastic. It tastes like bottled water, which yeah has a bit of a weird taste to it, but just deal with it you bunch of ninnies. Or throw some lemon slices in when you fill it up. You're probably using this for biking or hiking or something that isn't a suit and tie dining experience, so stop giving negative reviews because you don't like how the water tastes. And if you just can't handle your water not tasting like it came from a tap in the Andes, then call Osprey and they will gladly do whatever they can to placate your whimpering. This bladder doesn't leak at all unlike bladders with screw-on lids, holds a lot of water, dispenses it quickly and deftly, is easy to completely disassemble for cleaning, and comes with the almighty Osprey guarantee. If you want to drink water to stay alive without carrying a bottle on the trail, then this bladder is five stars all day. If you want to sip Perrier in the cool shade while wearing linen pants and flip flops, then maybe consider another water delivery method.
May 29, 2018
Originally posted at
Rated 5 out of 5
Best Reservior
Worked perfectly on a hiking trip in the Andes of Peru I just completed. I couldn't be more pleased. Easy to fill and no leaks. I love the design. Drying it out at the end of a trip is as easy as using a wad of paper towel to keep the large mouth open. I hung mine right side up and it dried out quickly. I expect it will last a long time. If I ever need another reservoir I will replace it with this same model. I am out of superlatives....
June 26, 2016
Columbia, South Carolina
Originally posted at
Rated 1 out of 5
Failed after two uses
I like the overall concept of this, but it's not trail-worthy. The seam failed just below the top closure after two five mile hike, where it was . Here in the desert, I can't take the chance of a water carrier failing on me.
July 29, 2016
Phoenix, AZ
Originally posted at
Rated 2 out of 5
New is not better
I have both an Atmos AG 50 for day hikes and purchased an AG65 for extended hikes. I have an older style 2 litre bladder in the AG 50 and a 3 litre bladder in the AG 65.
The design of the 2 Litre old style with screw on cap is far superior to this new style!
1. The plastic support clip broke on the second hike. It is not strong enough to support 3 litres of water.
2. It is more awkward to fill and, due to its full shape, takes up too much room.
3. Following on with point 2, the old style is both longer and wider meaning when full, the shape does not push into the pack storage area as much as the new 3 litre version.
4. Plastic feels less durable. Still getting bad taste; did not experience this with the earlier bladder.
4. Pros are that it weighs 35 grams less than the 2 litre screw cap version.
5,. Comes with a quick release tube (which I also retro fitted to the screw cap 2 litre version.
Summary, look elsewhere, not suitable for its intended purpose.
June 4, 2017
Melbourne Australia
Originally posted at
Rated 4 out of 5
Nice bladder, durable, new opening makes cleaning possible
Broke my old bladder, got this new one. Been using it nearly daily for 9 months.

The new opening system fits a hand inside so I can scrape out the scunge. I also soak mine with gin. Really easy to clean.

The new opening system has a plasic slide that holds the flap shut. The slide has a hook on it to hang inside the pack. The hook isn't strong enough to hold 100oz of bouncing bladder and broke on the first use. Fortunately the bladder has a stabilizing plastic back so I just shove the bladder into the pouch on my pack and it stands up and is comfortable.

Really really happy with this bladder. If/when this one wears out I'll buy another.
December 22, 2016
seattle, wa
Originally posted at
Rated 4 out of 5
Like the top closure better than the old version
I need the large capacity for desert backpacking. The hook is not strong enough for the 3L of water and broke the first use. Also, the hose turned yellow and I only use it for water. I DO like the new system of filling compared with the old screw-on lid that would never align right and lose water. It is also lighter than the older version. I like the hose disconnect to allow for easier fill. I do not like needing two hands to open bite valve.
May 1, 2017
Provo, UT
Originally posted at
Rated 3 out of 5
Proceed with caution
I needed a new bladder and was surprised to see the is new system from Osprey. Their previous model was my fav I've had so far (out of 6-7). I purchased this for two reasons (other than I lost my previous one). 1. The "All mighty Guarantee" and 2. just how not sexy the camelbak systems next to them were.
I gave this three stars for now. I have done one hike with it so far (BTW this new model fits perfectly into my four year old Raptor 14). Like another reviewer, I prefer the bite valve at 90 degrees as opposed to this 45 degree one. I also prefer the magnet placement on the older model. The zip-lock style of this bladder seems highly questionable to me. I forsee it being the Achilles heel of the whole thing. The only better aspect of this one is that it has gotta be lighter.
I will click "Yes, recommend to a friend" because I've had good luck with Osprey products and I believe, even if faulty, they will make it right. They wouldn't likely put heir name on it and offer the Guarantee if found faulty. We'll see!
August 28, 2016
Salida, CO
Originally posted at
Rated 3 out of 5
Quick Release Releases by Itself
I had last year's 3L model which I modified with a Sawyer quick release. I placed the junction approximately six inches from the bite nozzle. This worked extremely well and allowed me to easily refill the reservoir without having to open the backpack. However, the 3L was a bit big and bulky. When Osprey came out with new reservoirs this year, I picked up the 2L and sold my modded 3L. I thought, great, Osprey added a quick release, well done. On paper, it's great. In practice is another story. Osprey placed the quick release in an extremely vulnerable position. In my past five backpacking trips, I've had to remove my pack every time to reconnect the drink tube to the feeder tube. Every time, something in my pack would push against the quick release mechanism and disengage it. Nothing sucks more (pun intended) than being tired and thirsty and having to drop your pack because your reservoir isn't feeding water. On top of that, the quick release mechanism is difficult to tap into with my Sawyer refill tube and I always end up spilling water into the pack. The reservoir itself is great and I like the incorporated handle and back panel. It's much less bulky than the previous generation. The quick release mechanism, though, was badly engineered. As soon as I pick up some tubing, I'll mod it like I did for the previous gen. That'll solve my issue with it always disengaging and it'll make it much easier to refill.
September 5, 2016
New York, NY
Originally posted at

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