The main difference between the Osprey Exos 58 Mens Backpacking Backpack and the Gregory Mountain Men's Optic 55 Ultralight Backpack is that the Exos 58 Mens Backpacking Backpack has Load Lifters (Yes) while the Men's Optic 55 Ultralight Backpack does not.
Specs | Brand | Osprey | Gregory Mountain |
Name | Exos 58 Mens Backpacking Backpack | Men's Optic 55 Ultralight Backpack | |
Category | Backpacking | Mens | |
Sub Category | Mens | Backpacking | |
Capacity (L) | 58L | 55L | |
Dimensions (in) | 31.5 x16.14 x 14.57 | 23.5 x 12.6 x 4.2 | |
Weight (lb) | 2.7 | 2.4 | |
Fabric | 100D High Tenacity Nylon | Nylon | |
Color | 2 colors and patterns | 2 colors and patterns | |
Warranty | Osprey Lifetime Warranty | The Gregory Limited Lifetime Warranty | |
Release Date | February 4, 2015 | November 9, 2017 | |
Rating | 4.6 | 4.1 | |
Price | Under $250 | Under $225 | |
General Features | Shoulder Straps | Exoform shoulder straps | Padded shoulder straps |
Sternum / Chest Straps | Sternum strap with integrated safety whistle | Sternum and chest strap | |
Hip Belt / Waist Strap | Exoform hipbelt | 3D comfort cradle hipbelt | |
Zippers | ComfortGrip custom molded loop zipper pullers | ||
Main Compartment Access | Top loading access | U-zip main opening or full body front access | |
External Pockets | Front stretch mesh pocket and 2 side pockets | 3 external pockets including weather shield hip belt pocket | |
Side Pockets | Side pockets can fit water bottle | Side pockets can hold water bottle | |
Water Bottle | Yes | Yes | |
Handles | Top grab handle | Top grab handle | |
Loops and Attachments | Ice axe attachment with bungee tie-off, accessory cord attachment points, and Stow-on-the-Go trekking pole attachment | Adjustable attachment loop and upper shock lock | |
Travel Features | Compression Straps | External compression straps | External compression straps |
Rear Loading Straps | Yes | Yes | |
Hiking / Backpacking Features | Back Panel | 3D-tensioned breathable mesh backpanel with side ventilation | Ventilated back panel |
Rain Cover | Yes | ||
Load Lifters | Yes | ||
Internal / External Frame | 4mm Lightwire alloy internal frame | Aluminum internal frame | |
Ventilated Back | Yes | Yes | |
Hip Belt Pockets | Yes | ||
Top / Floating Lid | Yes | Yes | |
Trekking Pole Holders | Yes | ||
Hydration Features | Bladder Size | Holds 3L hydration reservoir | |
Hydration Compatible | Yes | Yes |
Osprey 's Exos 58 Mens Backpacking Backpack is a Backpacking backpack with Mens features while Gregory Mountain's Men's Optic 55 Ultralight Backpack is a Mens backpack with Backpacking features.
The Osprey Exos 58 Mens Backpacking Backpack has a capacity of 58L (liters), weighs 2.7 pounds and it's dimensions in inches are 31.5 x16.14 x 14.57. It's made of 100D High Tenacity Nylon and is available in 2 colors and patterns in comparison the Gregory Mountain Men's Optic 55 Ultralight Backpack's capacity is 55L with a size of 23.5 x 12.6 x 4.2 inches. Constructed from Nylon it weighs 2.4 pounds and is available in 2 colors and patterns.
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