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Hydrapak Shape-Shift Water Reservoir

$35.95 - $37.95

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  • Clear, 2L
  • Clear, 3L

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Shape-Shift Water Reservoir

Why settle for an average, run-of-the-mill hydration reservoir, when you can have an innovative design and added capacity without bumping up the price? That's just what you're getting with the HydraPak Shape-Shift Water Reservoir, thanks to its adjustable center baffle that keeps things slim when you need a low profile in your pack, then expands to give you more storage when increased water capacity takes precedent. You'll also get a self-sealing bite valve with a twisting on/off bar to ensure that your precious H2O doesn't leak on the trail. A Plug-N-Play connect system makes it easy to connect and disconnect the hose, while an auto shutoff valve instantly works to prevent leaking when disconnected. This reservoir also is fully reversible for easy cleaning and drying, and features a durable, abrasion resistant, and stretchy TPU material to keep it going for many an adventure.

  • Versatile hydration reservoir with an innovative design
  • Center baffle unlocks to give you added water capacity
  • Durable TPU construction is BPA- and PVC-free
  • Self-sealing bite valve prevents wasted water
  • Plug-N-Play system makes it easy to connect the hose in a flash
  • Reversible design makes it easy to clean and dry
  • Wide Slide-Seal top makes for easy filling and leakproof security
  • Item #HPK001J

TPU, HDPE, silicone
2L, 3L
[2L] 13 x 6.5in, [3L] 17 x 6.5in
Claimed Weight
[2L] 4.7oz, [3L] 5.3oz
Recommended Use
hiking, running, biking
Manufacturer Warranty

Tech Specs

What do you think about this product?



Hydrapak Shape-Shift Water Reservoir

Smart design, meet peak performance - also known as the Shape-Shift Reservoir.

>Rating: 5

Still Holding Up After 18 Months of Use

I've put it through the wringer
Size Bought

I've used my 3L Hydrapak dozens of times a month for the last year and a half. Aside from one instance (the reservoir held onto a soapy taste for a couple weeks after someone in my family washed it with dish soap) the reservoir has been free of any plastic or mildew taste. I rinse it out thoroughly and leave it in the freezer when not in use. I've had no leaks and no o-ring failure. It's definitely been worth the money I paid for it.


Shape-Shift Water Reservoir 3L

Simply put, some athletes thirst for more. That’s why we developed our high capacity 3 liter Shape-Shift. Like it’s smaller brother, it’s extremely durable, fully reversible for easy cleaning and, like all our reservoirs, helps you perform at your highest levels.



Smart design, meet peak performance – also known as the Shape-Shift Reservoir. Our time-tested creation for hydration on the go, it can take a serious beating, it fits nicely in most packs and it’s fully reversible for easy cleaning. Durable, dependable form and function.

My new 3L reservoir is sealed all along the top so that it doesn't open at all? Am I supposed to cut the liner to create an opening in the top of the bladder?


Shape-Shift Water Reservoir


Shape-Shift Water Reservoir


Shape-Shift Water Reservoir

>Rating: 5

only used twice but love it

i've only gotten a couple chances to use this but so far so good. like travis said no spillage and really durable. does the job!

>Rating: 5

Favorite Revisor

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

This revisor is tough and lightweight.

>Rating: 5

This Water reservoir is awesome

I've put it through the wringer

I love this thing. I like how I can adjust the amount of volume by the manipulating the center baffle. It took me a while to figure out how to do it, but once I got it, I was able to work with a smaller and flatter pack for my touring purposes and a larger volume for my hot day hiking use. The Sliding top lock is awesome for access to cleaning and drying as well as filling without spilling or holding the reservoir at an awkward angle to screw on the top. The quick connect at the bottom for the hose- Even better! Press the slide and pull the hose. No water will come out. It seals it off for you so you can do a quick link system.


Is it 2 liters with the baffle connected and larger with it disconnected or do you undo the baffle to get to the 2L capacity?