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Item # GRG1G203M

Gregory Zulu 55 (2023) Internal Frame Backpack

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Gregory Zulu Backpack Series Review

By Dave

Enwild Gear Specialist

The Enwild Difference

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The Gregory Zulu 55 delivers the size, storage (55 liters), and carrying comfort you absolutely need for any backpacking trip, but it also incorporates numerous high-end features and a well-ventilated backpanel to keep you cool and comfortable.


  • A supportive, cooling "open air", precision-fit backpanel: Tensioned mesh creates an open space between your back and the pack to maximize ventilation and an adjustable torso-length provides a custom fit and enhanced carrying comfort.
  • A body-hugging, flexible fit enhances stability while also promoting mobility: The FreeFloat flexible, cushioned hipbelt conforms to your lower back and hips, supporting the weight in your pack while moving freely with your natural hiking motion. The hipbelt also has oversized pockets that easily keep even the largest of cellphones secure and in easy reach.
  • Convenient U-zip front entry offers easy access: The pack has traditional top access beneath its top lid but it also has a large front opening that provides complete access to the interior without you having to remove the lid.
  • Separate sleeping bag storage enhances backpacking functionality: A dedicated zippered lower pocket is the perfect place to stow your sleeping bag for easy access at the end of a long day on the trail.

Check out all of these other special features!
  • An alloy steel perimeter frame utilizes tension and compression to provide stable yet flexible support to comfortably carry up to 50 pounds
  • The harness is constructed from Lifespan foam to provide generations worth of comfort and perforated to maximize airflow
  • Hydration sleeve with SpeedClip hanger is compatible with Gregory 3D Hydro reservoirs (sold separately)
  • Top zippered pocket has reflective attachment points, a key clip, and an internal zippered security pocket
  • Dual side stretch mesh pockets with pass-throughs for over-or-under compression
  • Front stretch mesh pocket with durable fabric font panel and secure buckle closure
  • Adjustable attachment loop and upper "shock lock" for trekking poles or an ice axe
  • Custom ComfortGrip molded zipper pulls
  • Sustainability-focused construction employs GRS-certified recycled polyester and a PFC-free durable water-repellent coating

California residents: view proposition 65  Warning

Technical Specs

Best Use
Backpacking, Hiking
Top Loading with U-Shaped Front Zip Access and Sleeping Bag Compartment
Item Dimensions
Small/Medium: 29" x 13.75" x 13"
Medium/Large: 30" x 13.75" x 13"
Fits Torso
Small/Medium: 15" - 19"
Medium/Large: 18" - 22"
Fits Waist
Small/Medium: 25" - 48"
Medium/Large: 27" - 53"
Frame Material
Alloy steel
Hydration Compatible
Maximum Weight
50 lbs
Sternum Strap
Yes; Adjustable
Torso Adjustment
Small/Medium: 3234 cu in
Medium/Large: 3356 cu in
Limited Lifetime
Internal Frame Backpack
Body: 40% recycle 400D polyester ripstop with PFC-free DWR
Base: 420D nylong with PFC-free DWR
Lining: 40% post-consumer recycled 135D polyester with PFC-free DWR
Item Weight
Small/Medium: 4.11 lbs
Medium/Large: 4.2 lbs

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