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