3D Hydro 3L Reservoir
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Shop Similar Products3D Hydro Reservoir
With a soft molded design, the 3D Hydro offers the benefits of a reservoir, but packs in tech that lets it dry like a bottle for easier cleaning.
Details
- An adaptable reservoir with bottle-like perks
- Quick drying, open construction for easier cleaning
- Speedclip attachment system locks bag in place in your pack
- Integrated hanger makes for easy hang drying after wash
- Fill up with stability and ease thanks to spine handle
- Drylock magnetic bite valve stays in place and easy to access
- 3D anatomical construction sits flat and comfortably on your back
- Item #GREZ05M
- Material
- polyethylene
- Volume
- 2L (122cu in), 3L (183cu in)
- Hose
- inline, quick-disconnect
- Valve
- Drylock, magnetic
- Dimensions
- [2L] 14.25 x 7 x 3in, [3L] 17.25 x 7 x 3in
- Claimed Weight
- [2L] 6.5oz, [3L] 7oz
- Manufacturer Warranty
- limited lifetime
Reviews
Q&A
What do you think about this product?
Overall Rating
4.5 based on 109 ratings
Review Summary
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.View
Selecting an option will reload the available reviews on the pageMarch 20, 2025
I love the higher capacity of this reservoir as many other brands tend to be in the two liter range. Three liters will get me though a 10-15 mile hike without running out of water. The tank and screw lid are great design, simplifying filling and checking to make sure it is secure and not leaking. The "3D" design makes cleaning and drying much easier, and a hook at the far end allows the reservoir to easily air out. I have used this product on over a hundred hikes and have not had any issues with it.
Originally reviewed on ExpertVoice.com
November 18, 2024
Amazing bladder and hang system
Best bladder I've ever used and works perfectly in conjunction with the Gregory packs.
Originally reviewed on ExpertVoice.com
March 13, 2024
High Quality
I’ve had this reservoir for at least 2 years. Great quality, no leaks, no issues!!
Originally reviewed on ExpertVoice.com
October 2, 2023
Reliable water transport
Easy to fill, easy to dry out, easy hook & handle maneuvering; threaded opening syncs with water filter pumping
Originally reviewed on Gregory
September 21, 2023
Perfect
Fits perfectly in my Osprey day pack. It’s easy to fill, load in pack, holds more than enough water for long hike in hot weather, easy to remove, and to drain and dry. Very happy with it.
Originally reviewed on Gregory
September 12, 2023
Sorely disappointed
I really liked this bladder at first, and had success with it for much longer than some of the other reviews on this page. Unfortunately, my bladder succumbed to the same issue that many people are reporting on here. This is an obvious design flaw in the bladder. I took care to treat mine really well, and all of the sudden found myself with two liters of water at the bottom of my pack. Could have done some real damage. I also find it really disappointing that Gregory requires that you pay to ship your equipment to their repairs and warranties shop. Many other outdoor gear companies will provide a shipping label for obvious warranty issues - and this is clearly something that would fall under their warranty.
Originally reviewed on Gregory
August 13, 2023
I despise this water bladder!
I should have returned it when I had the chance. Instead, I thought I just didn’t screw the lid on well enough and then made countless other excuses each time it failed and leaked all over my pack. Maybe I forgot to close the bite valve… maybe I squished it too much… maybe that’s just condensation… Well, it failed again just recently when I was testing out my backpacking gear and got everything damp, including my camera. Never again will I buy this or any Gregory water bladders!!!
Originally reviewed on Gregory
August 7, 2023
Best Reservoir Ever
Perfect fit for my Gregory pack, and the most thought out reservoir ever. So many useful features, and cheaper than lesser products, as well. Five stars all the way!!
Originally reviewed on Gregory
June 2, 2023
Ripped after light use
I bought this 2 years ago and have maybe used it on 10 hikes. Went to refill it today and it had ripped where the cap meets the water bladder. Furious as this is the start of a 4 day hiking trip
Originally reviewed on Gregory
May 7, 2023
Great Product!
Have always used Camelbak products (packs, reservoirs), but have been disappointed lately. After extensive research, I decided to purchase a Gregory pack for a 17 mile Sedona hike. The pack came with a 2.5L reservoir…which is fine for most hikes, but I wanted the 3L for Sedona. I was very happy with it. The size of the reservoir’s opening is generous and allows for easy filling with water & ice. And the location of the quick disconnect junction is absolutely perfect….so easy to access. I appreciated not having to feed the tubing back through the opening when I had to refill. Great product!
Originally reviewed on Gregory
Do you have a question about this product?
December 3, 2023
Will these reservoirs work with any brand bag? I love mine and want to get one as a gift but they do not have a Gregory pack!
Originally reviewed on Gregory
August 1, 2023
Is the cap compatible with the standard wide-mouth (63mm) cap like those present on MSR Guardian purifier or the wide-mouth nalgene?
Originally reviewed on Gregory
July 23, 2023
What is the extra magnet for?
Originally reviewed on Gregory
October 26, 2022
how are you supposed to get water out of the bladder and tube to store?
Originally reviewed on Gregory
July 15, 2022
Are extra magnetic accessories available (didn't see them on your website)? I use the reservoir with more than one pack, and it would be helpful to have sternum magnets for each.
Originally reviewed on Gregory
July 8, 2022
Can the bladder be placed in the freezer?
Originally reviewed on Gregory
February 1, 2022
Will this 3L reservoir fit in Maya22?
Originally reviewed on Gregory
November 25, 2021
does the "GREGORY 3D HYDRO" & the "GREGORY 3D HYDRO TREK" both work with any Gregory backpack?
Originally reviewed on Gregory
August 20, 2021
How long is the tube?
Originally reviewed on Gregory
August 5, 2021
Does the 3L Reservoir fit in a Maya 16?
Originally reviewed on Gregory