The main difference between the Gregory Mountain Men's Optic 55 Ultralight Backpack and the Gregory Mountain Mountain Nano 18 Backpack is that the Men's Optic 55 Ultralight Backpack has Zippers (ComfortGrip custom molded loop zipper pullers) while the Mountain Nano 18 Backpack does not.
Specs | Brand | Gregory Mountain | Gregory Mountain |
Name | Men's Optic 55 Ultralight Backpack | Mountain Nano 18 Backpack | |
Category | Mens | Backpacking | |
Sub Category | Backpacking | Hiking | |
Capacity (L) | 55L | 18L | |
Dimensions (in) | 23.5 x 12.6 x 4.2 | 18.8 x 11.4 x 1.9 | |
Weight (lb) | 2.4 | 1.0 | |
Fabric | Nylon | Nylon | |
Color | 2 colors and patterns | 4 colors and patterns | |
Warranty | The Gregory Limited Lifetime Warranty | The Gregory Limited Lifetime Warranty | |
Release Date | November 9, 2017 | July 16, 2020 | |
Rating | 4.1 | 4.5 | |
Price | Under $225 | Under $75 | |
General Features | Shoulder Straps | Padded shoulder straps | Air mesh padded shoulder straps |
Sternum / Chest Straps | Sternum and chest strap | Sternum strap | |
Hip Belt / Waist Strap | 3D comfort cradle hipbelt | Removable hip belt | |
Zippers | ComfortGrip custom molded loop zipper pullers | ||
Main Compartment Access | U-zip main opening or full body front access | Normal zipped access | |
External Pockets | 3 external pockets including weather shield hip belt pocket | 1 zipped front pockets and 2 side pockets | |
Side Pockets | Side pockets can hold water bottle | 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 | ||
Hiking / Backpacking Features | Back Panel | Ventilated back panel | Padded back panel |
Rain Cover | Yes | ||
Internal / External Frame | Aluminum internal frame | ||
Ventilated Back | Yes | ||
Hip Belt Pockets | Yes | ||
Top / Floating Lid | Yes | ||
Hydration Features | Hydration Compatible | Yes | Yes |
Gregory Mountain's Men's Optic 55 Ultralight Backpack is a Mens backpack with Backpacking features while Gregory Mountain 's Mountain Nano 18 Backpack is a Backpacking backpack with Hiking features.
The Gregory Mountain Men's Optic 55 Ultralight Backpack has a capacity of 55L (liters), weighs 2.4 pounds and it's dimensions in inches are 23.5 x 12.6 x 4.2 . It's made of Nylon and is available in 2 colors and patterns in comparison the Gregory Mountain Mountain Nano 18 Backpack's capacity is 18L with a size of 18.8 x 11.4 x 1.9 inches. Constructed from Nylon it weighs 1.0 pounds and is available in 4 colors and patterns.
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