



💦 Elevate your hydration game — because staying dry is so last season!
The Osprey Hydraulics LT 2.5L Water Reservoir combines lightweight design with smart features like a watertight Slide-Seal top, quick-disconnect system, and magnetic hose clip. Engineered for active professionals and outdoor enthusiasts, it offers stable water flow, easy cleaning, and safe, BPA-free materials—making it the ultimate hydration upgrade for your next adventure.




| ASIN | B017ONQM5W |
| Best Sellers Rank | #31,737 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #34 in Outdoor Backpack Reservoirs |
| Brand Name | Osprey |
| Capacity | 2.5 Liters |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,458) |
| Date First Available | May 1, 2016 |
| Global Trade Identification Number | 00845136036543 |
| Included Components | Osprey Hydraulics LT 2.5L Reservoir |
| Item Dimensions LxWxH | 15.4 x 7.5 x 2.4 inches |
| Item Package Dimensions L x W x H | 19.29 x 8.15 x 1.18 inches |
| Manufacturer | Osprey Packs |
| Model Name | Hydraulics |
| Model Year | 2016 |
| Package Weight | 0.3 Kilograms |
| Part Number | 10000484 |
| Size | 2.5 L |
| Strap Type | Shoulder Strap, Chest Strap, Adjustable |
| Style | Hydraulics LT 2.5L Reservoir |
| Suggested Users | unisex-adult |
| Tank Volume | 2.5 Liters |
| UPC | 845136036543 |
| Warranty Description | Warranty |
J**N
Lightweight, quick disconnect is awesome
I loved having this hydration pack — it has a great capacity, and the quick-disconnect was very helpful when refilling. It is lightweight, high quality, and happily it lacks the typical plastic taste of lower cost brands. The water bladder lasted a few months until it got an abrasion tear — probably when I fell while my mountain bike.
Z**.
BEST HYDRATION RESERVOIR OUT THERE
Awesome bladder. I already have one of these so i know what i can say about it. Stays relatively flat even when full, awesome all the way around. OSPREY doesnt fool around!!! Great quality on the slide top and all components. Nothing feels chinsey, even though the bag itself is kinda thin, the material is strong. Recommend freezing with lemon juice and lemons in water 2/3 full before use though. Lots of plastic/rubber taste when you first get it. To be expected from all new water bladders. Bite valve is excellent and the magnetic clip is my favorite feature. Excellent option if you wanna scoop your water straight from a stream, with the slide top mouth and hard lips it is easy peasy. The fact that the tube splits with a quick connect, filtering is a breeze if you have a clip in filter. Filling this thing with a gravity system would be just as hassle free. If you dont need the rigid back panel the LT model is the way to go, it is the lightest of the hydraulics line and will last you a very long time. All around the best choice when it comes to water bladders, i think. Be sure to get a cleaning kit though. Cleaning the drink tube could keep you from getting unnecessarily sick.
J**N
works great
best bladder I have ever used. I have this same one in my osprey pack, and hunting pack.
J**N
woke up dreaming
REALLY! About 4 days ago I woke up thinking there has to be a better water bladder design. Every time I fill up my Humpback (you know the one) bladder it swells up as big as my leg and takes up half the pack. I thought to myself, what we need is a bladder with an internal panel that makes it keep it's shape. I thought to myself of the $$$millions that I would make and how adoring fans would stand in line just to thank me. Then I looked on Amazon. RATS! Right there before me was this Osprey 2.5L bladder designed just for me. It does not hurt that I also have an Osprey pack. Seriously, this may be the absolute best design that I have seen. The V that you see is two "welded" in panels that keep the bladder from ballooning into a sausage. When fully filled it is about 2" thick and should easily fit any pack designed to carry a bladder. The hose can be easily routed left or right as required by your pack. It also has a quick disconnect inside the bag that allows the bag to be removed with out having to reroute the exterior part of the hose. The magnetic clip to keep the mouth piece in place for easy access is simple genius. I could go on about how easy it is to fill etc etc etc but instead I will say that if I had build my own bladder it is pretty certain that it would look and work a whole lot like this one does. Of course, I will miss my adoring fans but at least I did get a great bladder and did not have to make it myself. Absolutely recommend this.
T**Y
Favorite!
My favorite bladder. I gave it 4 stars because I needed a little bit more instruction on to dismantle it to clean all the parts. I like how others clearly pop off or "click" off I felt at times I'd break it. And sometimes twisting it on and off is difficult. I love how easy it is to load it up with water and even ice. I've put a whole frozen water bottle down the middle and it worked great.
K**D
As always, a great Osprey product
Another great reservoir. This is my third Osprey Hydraulics LT 2.5L and will always be a loyal customer. A few years ago, one of the units developed a leak in one of the seams and Osprey replaced it. Great product support and customer service.
J**E
Does great, capacity is good and haven't had any leaking
Works great. I wasn't sure about the type of closure - I'm unfamiliar with it and have heard many reports of leaking, however I haven't had any issues. I did buy a cap for it which isn't the best but I prefer not having it get drug around in the mud. First drink every time (and it was drained and dry before use) always tastes a little funky. Then I don't know if it doesn't taste anymore or if I'm used to it, but I haven't really noticed any other weird tastes after that. Capacity is also perfect.
A**A
7 days in Yosemite backpacking - great!!!
It’s my 2nd bag (I couldn’t find the first one which I got about 3-4 years ago and used extensively, so bought another one). Both bags were/are great! No leaking, no ruptures - served great during my Yosemite backpacking trip! Regarding water taste - you may feel a little plasticky taste at the beginning, but the longer you use it, the less it’s present. The former I would say was already without any aftertaste. I also had CamelBak and I think the Osprey has less problem with the taste… Wait for the right price, which should be about $38 or less… Black Friday price was $34.50 and Jul08 2025 so far the lowest price I have seen $26.08 (Prime Day)
S**A
Déception à l'usage de cette poche. Le système qui permet de détacher facilement le tuyau pour remplir la poche sans tout défaire se détache tout seul dans le sac après une seule utilisation dans ces conditions très softs et sans contact avec autre chose et dans un sac à dos adapté muni d'un compartiment dédié. Pensant que c'était un défaut j'ai demandé un remplacement de produit mais aucune différence. Très gênant quand en pleine rando votre tuyau se détache tout seul. Dommage, sans quoi j'aurais adhéré.
S**R
2,5l ist eine gute und nicht zu schwere Größe für längere Touren. Schlauch-System ist durchdacht und mit dem Magnet am Brustgurt wirklich praktisch. Passt perfekt in meinen Osprey Syncro 20 und bisher ist nichts ausgelaufen. Im Vergleich zu anderen Wasserblasen, wirkt diese qualitativ hochwertig und auch das Mundstück sollte eine hohe Lebensdauer erreichen. Klare Empfehlung!
R**S
Bolsa de calidad, tras años de uso sigue como nueva, muy resistente.
A**Z
Muy buena calidad
B**N
It’s a little more expensive than the 3rd party options but the Osprey bladder is fantastic. I bought this 2.5 l version to go in my Osprey Stratos 24 pack. I could have easily used the 3 l option as well. Love the detachable hose for easier refilling without having to snake the whole hose and mouthpiece out of the pack sleeve. No bad ‘plastic’ taste/smell after an initial quick wash w dish soap and water. Would probably go to at least a 3l if not 4l for my Stratos 36 pack.
Trustpilot
3 weeks ago
2 months ago