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Item # GRGEG203M

Gregory 3D Hydro Reservoir (2023)

Purchase 3D Hydro Reservoir (2023)
Starting At: $42.95

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Available in your choice of 2L and 3L options, the Gregory 3D Hydro Reservoir and its flex-molded three-dimensional design offers cut-above leakproof, super quick-drying performance that makes it absolutely ideal for backpacking.


  • Three-dimensional design creates an anatomical fit, shortens drying time, and cuts down on bacteria growth: The soft-molded 3D design effectively distributes weight and positions water to fit flat against your back for optimal stability and minimal sloshing. The design also prevents contact between the top and bottom layers of the reservoir when hanging so it dries fast and keeps unwanted gunk from growing in the interior.
  • QuickDry hanger and SpeedClip mounting system enhance on-trail and after-hike performance: The integrated QuickDry hanger lets you easily clip the reservoir anywhere for drying, storage, or access outside of the pack and the SpeedClip system creates a one-handed lock-and-go linkage between the reservoir and the inside of Gregory pack hydration sleeves or those of most any backpack.
  • Integrated spine-molded handle for convenient filling: A comfortable, soft-molded handle and a molded baseplate make filling easy and provide full-length support for hassle-free insertion and removal from your pack.

Other features include:
  • A soft-molded bite valve mouthpiece with a leakproof lever closure
  • A rubberized fill port opening tethers directly to the screwcap lid and has an integrated hose locator and quick connect/disconnect for easy refills without having to unthread the hose entirely
  • Available in 2L and 3L size options

California residents: view proposition 65  Warning

Technical Specs

Best Use
Backpacking, Hiking
Item Weight
2L: 6.5 oz
3L: 7 oz
Item Dimensions
2L: 14.25" x 7" x 3"
3L: 17.25" x 7" x 3"
Limited Lifetime
Hydration Reservoir
2L: 122 cu in
3L: 183 cu in

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