Gregory Zulu 45 Pack - Men's

Color: Forage Green
please select a Size
Choose a shipping method

Members get an estimated $20.00 back on this item as a part of your annual .

Members get an estimated $20.00 back on this item.
To buy,  sign in as an REI Co-op Member or join now.

Big enough for sunup-to-sundown treks and overnights, the men's Gregory Zulu 45 pack is light and agile thanks to the FreeFloat dynamic suspension—letting your back breathe, summer or winter.

  • Features

    • FreeFloat dynamic suspension system with independent, floating 3D lower back comfort cradle balances heavy loads with ease
    • Fully adjustable torso length with open-air ventilated back panel offers a customizable fit and exceptional breathability
    • Sunglass QuickStow system on shoulder harness allows for quick, secure access to your shades
    • Sternum strap buckle has safety whistle and hydration tube hose clip
    • Oversize zippered hipbelt pockets provide easy access for must-haves on the trail
    • Dual stretch-mesh side pockets allow you to grab your water bottle on the go
    • Top zippered quick-access pocket and interior zippered pocket with key clip help you organize essentials
    • Front heavy-duty stretch-mesh stash pocket holds an extra layer
    • Signature U-zip panel provides easy access to all of your gear, regardless of location
    • Adjustable bungee attachment lets you secure trekking poles or ice axes
    • Lower side compression allows you to balance and stabilize your load
    • Custom-molded zipper pulls offer comfortable grip
    • SpeedClip attachment system is compatible with Gregory 3D Hydro reservoir (reservoir not included)


    View the Gregory Zulu Product LineView all Gregory Backpacking Packs
  • Technical Specs

    Best Use


    Frame Type

    Internal Frame

    Gear Capacity (L)

    45 liters

    Gear Capacity (cu. in.)

    2,746 cubic inches


    S/M: 3 lbs. 8.3 oz.

    M/L: 3 lbs. 11.4 oz.

    Adjustable Torso Length


    Fits Torso Length (in.)

    S/M: 15-19 inches

    M/L: 18-22 inches

    Fits Waist/Hips

    S/M: 25-48 inches

    M/L: 27-53 inches


    Nylon/closed-cell foam

    Frame Material

    4 mm alloy steel and fiberglass anti-barreling stay and HDPE

    Number of Stays

    1 perimeter wire

    Reservoir Compatible


    Suspended Mesh Back Panel


    Pack Access


    Number of Exterior Pockets

    6 + main compartment

    Sleeping Bag Compartment


    Hipbelt Pockets



    S/M: 23.2 x 13.8 x 9.1 inches

    M/L: 24.4 x 13.8 x 9.1 inches



  • Reviews
    0 reviews

    Loading Reviews...
  • Questions & Answers

    Loading Questions...