Osprey Packs 1.5 Liter Hydraulics LT Reservoir

Item No. 84513603652

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Product Description

Osprey's Hydraulics® LT 1.5L Reservoir by Hydrapak is made for light and fast activities where weight and balance are critical. Twin-welded chevron baffles stabilize the water and maintain a flat profile. The streamlined design allows for easy loading into internal hydration sleeves. 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.

Customer Reviews

2.3 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 1 out of 5
I bought the DYNA 1.5L. While I LOVED this product initially--the bladder/reservoir part not even 3 months into leaks! I went to do my LONG run 22 miles this morning and it was LEAKING everywhere! I would NOT recommend it. I kept the backpack portion and purchased a different brand of bladder.
September 13, 2020
Originally posted at
Rated 1 out of 5
I'm divorcing osprey's hydration reservoirs!
I have a couple major complaints about this reservoir. It worked like a charm for my first 3 hikes. On the 4th hike, the part of the straw that detaches from the bag wouldn't stay on anymore. The sllightest bump would make it come apart. If I tried to drink out of it I got nothing but air. Spent the majority of my hike messing with it to see if I could fix it or figure out what the problem was. I tried several things all to no avail. Left me high and dry. Also, the cleaning kit for this doesn't fit right because of the baffling in the reservoir. I like the pack that came with the reservoir. It's the dyna. But as of today, I am looking for a better hydration pack from a company that can back up their products.
August 21, 2020
Originally posted at
Rated 1 out of 5
Backpacking & Blisters Podcast Review: Leaked
I LOVE Osprey stuff! But I use bladders on the trail about 3 days a week (on average). I'm not overly aggressive with it. After about 4-5 weeks it started leaking from the bite valve. Dripping on me is a better description. If you use this a few times a year it will not be a problem but for regular users, it is.
-Backpacking and Blisters Podcast
April 11, 2020
Originally posted at
Rated 5 out of 5
I like it A LOT
I had recently purchased an Osprey Daylite pack and decided to spend the few extra dollars on the Osprey 1.5 L Reservoir. Like a couple of the reviews, I too was looking for some written instructions. However, I quickly found the video, which was very helpful. I followed along with the narrator; going back and reviewing what he said and demonstrated quite a few times. I too felt like I was going to rip or break the opening when I tried to open it the first time. I had trouble disconnecting the hose from the quick connect in order to re-route it to the left side of the reservoir. I also had trouble with the bite valve locking mechanism. However, I found that both problems were resolved quickly with working out the stiffness/tightness of the new plastic. Overall I really like the reservoir and feel like I've made a huge step up from my previous ones.
January 5, 2020
Originally posted at
Rated 1 out of 5
I would not purchase this product again
Virtually impossible to remove secondary plastic seal to add water.
May 13, 2019
Originally posted at
Rated 5 out of 5
Perfect for trail running
I got this pack specifically for trail runs, and after trying it out this past weekend, I am very pleased. The slim profile is the perfect size for me and I wouldn't want any more volume on a run. I like the reservoir opening, though I understand previous reviewers' concerns about drying and cleaning. It just takes a little creativity to figure out how to prop the opening wide enough for air flow. I laughed when I saw others having the same experience trying to figure out how to open it the first time. It took about 6 seconds of googling to sort it out, though, so not sure why the negativity. Overall, I love it.
January 22, 2018
Originally posted at