The main difference between the Gregory Mountain Zulu 55 Backpack and the Gregory Mountain Men's Optic 48 Ultralight Backpack is that the Zulu 55 Backpack has Base / Bottom (Dual layer bottom panel) while the Men's Optic 48 Ultralight Backpack does not.
Specs | Brand | Gregory Mountain | Gregory Mountain |
Name | Zulu 55 Backpack | Men's Optic 48 Ultralight Backpack | |
Category | Mens | Mens | |
Sub Category | Hiking | Backpacking | |
Capacity (L) | 55L | 48L | |
Dimensions (in) | 30 x 13.25 x 12 | 26 x 14 x 4.5 | |
Weight (lb) | 3.6 | 2.4 | |
Fabric | 100% Nylon | Nylon | |
Color | 2 colors and patterns | 2 colors and patterns | |
Warranty | The Gregory Limited Lifetime Warranty | The Gregory Limited Lifetime Warranty | |
Release Date | January 22, 2019 | November 9, 2017 | |
Rating | 4.8 | 4.6 | |
Price | Under $200 | Under $250 | |
General Features | Shoulder Straps | Die-cut shoulder harness | Men's specific die-cut shoulder harness |
Sternum / Chest Straps | Sternum strap with safety whistle and hydration clip | Sternum strap | |
Hip Belt / Waist Strap | 3D comfort cradle hipbelt | 3D comfort cradle hipbelt | |
Zippers | ComfortGrip custom molded loop zipper pullers | ComfortGrip custom molded loop zipper pullers | |
Main Compartment Access | Front U-Zip access | U-zip main opening or full body front access | |
External Pockets | Floating top pocket with zippered compartment and an underside zippered pocket, front stretch mesh pocket, sleeping bag compartment with divider, and 2 side pockets | 3 external pockets including weather shield hip belt pocket | |
Side Pockets | Side pockets can fit water bottle and other accessories | Side pockets can hold water bottle | |
Water Bottle | Yes | Yes | |
Handles | Top grab handle | Top grab handle | |
Loops and Attachments | Adjustable attachment loop and upper shock lock | Adjustable attachment loop and upper shock lock | |
Travel Features | Compression Straps | External compression straps | External compression straps |
Rear Loading Straps | Yes | Yes | |
Base / Bottom | Dual layer bottom panel | ||
Hiking / Backpacking Features | Back Panel | 3D foam breathable back panel | Ventilated back panel |
Rain Cover | Yes | Yes | |
Internal / External Frame | External perimeter alloy frame | Aluminum internal frame | |
Ventilated Back | Yes | Yes | |
Adjustable Length Torso | Yes | Yes | |
Hip Belt Pockets | Yes | Yes | |
Top / Floating Lid | Yes | Yes | |
Trekking Pole Holders | Yes | ||
Reflective Safety Strips | Reflective attachment points | ||
Hydration Features | Hydration Compatible | Yes | Yes |
Gregory Mountain 's Zulu 55 Backpack is a Mens backpack with Hiking features while Gregory Mountain 's Men's Optic 48 Ultralight Backpack is a Mens backpack with Backpacking features.
The Gregory Mountain Zulu 55 Backpack has a capacity of 55L (liters), weighs 3.6 pounds and it's dimensions in inches are 30 x 13.25 x 12. It's made of 100% Nylon and is available in 2 colors and patterns in comparison the Gregory Mountain Men's Optic 48 Ultralight Backpack's capacity is 48L with a size of 26 x 14 x 4.5 inches. Constructed from Nylon it weighs 2.4 pounds and is available in 2 colors and patterns.