The main difference between the Gregory Mountain Men's Inertia 20 H2O Day Hiking Backpack and the Gregory Mountain Zulu 55 Backpack is that the Men's Inertia 20 H2O Day Hiking Backpack has Bladder Size (3 Liter 3D hydro reservoir) while the Zulu 55 Backpack does not.
Specs | Brand | Gregory Mountain | Gregory Mountain |
Name | Men's Inertia 20 H2O Day Hiking Backpack | Zulu 55 Backpack | |
Category | Mens | Mens | |
Sub Category | Backpacking | Hiking | |
Capacity (L) | 20L | 55L | |
Dimensions (in) | 20.08 x 10.83 x 3.15 | 30 x 13.25 x 12 | |
Weight (lb) | 1.9 | 3.6 | |
Fabric | 100% Nylon | 100% Nylon | |
Color | 2 colors and patterns | 2 colors and patterns | |
Warranty | The Gregory Limited Lifetime Warranty | The Gregory Limited Lifetime Warranty | |
Release Date | November 9, 2017 | January 22, 2019 | |
Rating | 4.8 | 4.8 | |
Price | Under $75 | Under $200 | |
General Features | Shoulder Straps | Die-cut shoulder harness | Die-cut shoulder harness |
Sternum / Chest Straps | Sternum and chest strap | Sternum strap with safety whistle and hydration clip | |
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 | Normal zipped access | Front U-Zip access | |
External Pockets | 5 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 | |
Side Pockets | Side pockets can fit water bottle and other accessories | Side pockets can fit water bottle and other accessories | |
Water Bottle | Yes | Yes | |
Handles | Top grab handle | Top grab handle | |
Loops and Attachments | Adjustable attachment loop and upper shock lock | ||
Travel Features | Compression Straps | External compression straps | |
Rear Loading Straps | Yes | ||
Base / Bottom | Dual layer bottom panel | Dual layer bottom panel | |
Hiking / Backpacking Features | Back Panel | 3D foam breathable backpanel | 3D foam breathable back panel |
Rain Cover | Yes | ||
Internal / External Frame | External perimeter alloy frame | ||
Ventilated Back | Yes | ||
Adjustable Length Torso | Yes | ||
Hip Belt Pockets | Yes | Yes | |
Top / Floating Lid | Yes | ||
Trekking Pole Holders | Yes | Yes | |
Reflective Safety Strips | Reflective attachment points | ||
Hydration Features | Bladder Size | 3 Liter 3D hydro reservoir | |
Replaceable Bladder | Yes | ||
Hydration Compatible | Yes | Yes |
Gregory Mountain 's Men's Inertia 20 H2O Day Hiking Backpack is a Mens backpack with Backpacking features while Gregory Mountain 's Zulu 55 Backpack is a Mens backpack with Hiking features.
The Gregory Mountain Men's Inertia 20 H2O Day Hiking Backpack has a capacity of 20L (liters), weighs 1.9 pounds and it's dimensions in inches are 20.08 x 10.83 x 3.15. It's made of 100% Nylon and is available in 2 colors and patterns in comparison the Gregory Mountain Zulu 55 Backpack's capacity is 55L with a size of 30 x 13.25 x 12 inches. Constructed from 100% Nylon it weighs 3.6 pounds and is available in 2 colors and patterns.