Gregory 3D Hydro Reservoir - 3 Liters

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Thanks to its soft molded 3D design, the 3-liter Gregory 3D Hydro Reservoir works like a reservoir and dries like a bottle. Its generous capacity and convenient features make it a go-to on the trail.

  • Features

    • Soft-molded 3D design prevents contact between top and bottom layers when hanging open, dramatically speeding drying time and discouraging bacteria growth
    • QuickDry hanger offers a convenient option for storage or hang drying on or off the trail, integrated into the reservoir itself
    • Crescent handle is designed to work with the Gregory SpeedClip attachment system for a one-handed lock-and-go linkage system
    • 3D form and full-length baffle distribute the weight of the reservoir by positioning the water flat against your back for optimal stability and comfort
    • A soft-molded handle on the spine makes filling easy and the co-molded baseplate provides full length support for hassle-free insertion and removal from the pack
    • Inline hose quick-disconnect coupling makes for easy refills without having to unthread the hose from the shoulder harness
    • Push-button on/off bite valve allows for confident, leak-free storage while traveling to and from the trail (magnet accessory included)
    • Rubberized fill port opening with integrated hose locator features inline quick-disconnect and screwcap tether


    View all Gregory Reservoirs
  • Technical Specs

    Best Use


    Liquid Capacity (L)

    3 liters

    Liquid Capacity (fl. oz.)

    100 fluid ounces

    Bite Valve Shut-off Switch


    Quick Disconnect Tubing





    17 x 7 x 3 inches

    BPA Free



    7 ounces

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    247 reviews with an average rating of 4.3 out of 5 stars

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