Osprey Atmos AG 50 Mens Backpacking Backpack vs Gregory Mountain Men's Optic 55 Ultralight Backpack
The main difference between the Osprey Atmos AG 50 Mens Backpacking Backpack and the Gregory Mountain Men's Optic 55 Ultralight Backpack is that the Atmos AG 50 Mens Backpacking Backpack has Stowable Straps (Removable sleeping pad straps) while the Men's Optic 55 Ultralight Backpack does not.
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| Specs | Brand | Osprey | Gregory Mountain |
| Name | Atmos AG 50 Mens Backpacking Backpack | Men's Optic 55 Ultralight Backpack | |
| Category | Mens | Mens | |
| Sub Category | Backpacking | Backpacking | |
| Capacity (L) | 50L | 55L | |
| Dimensions (in) | 32.68 x 14.96 x 15.35 | 23.5 x 12.6 x 4.2 | |
| Weight (lb) | 4.2 | 2.4 | |
| Fabric | 100D X 630D Nylon Dobby | Nylon | |
| Color | 3 colors and patterns | 2 colors and patterns | |
| Warranty | Osprey Lifetime Warranty | The Gregory Limited Lifetime Warranty | |
| Release Date | August 15, 2015 | November 9, 2017 | |
| Rating | 4.7 | 4.1 | |
| Price | Under $250 | Under $225 | |
| General Features | Shoulder Straps | Adjustable shoulder straps | Padded shoulder straps |
| Sternum / Chest Straps | Sternum strap with integrated safety whistle | Sternum and chest strap | |
| Hip Belt / Waist Strap | Fit-on-the-Fly hipbelt with pockets | 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 stretch mesh 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 | Web attachment points, dual ice tool loops, Stow-on-the-Go trekking pole attachment, integrated FlapJacket | Adjustable attachment loop and upper shock lock | |
| Travel Features | Compression Straps | External compression straps | External compression straps |
| Stowable Straps | Removable sleeping pad straps | ||
| Rear Loading Straps | Yes | ||
| Hiking / Backpacking Features | Back Panel | Innovative AntiGravity suspension | Ventilated back panel |
| Rain Cover | Yes | ||
| Internal / External Frame | LightWire-tensioned, full peripheral frame comfortably transfers pack load | Aluminum internal frame | |
| Ventilated Back | Yes | Yes | |
| Hip Belt Pockets | Yes | Yes | |
| Top / Floating Lid | Yes | Yes | |
| Trekking Pole Holders | Yes | ||
| Hydration Features | Bladder Size | Holds 3L hydration reservoir | |
| Hydration Compatible | Yes | Yes | |
You're currently comparing the Atmos AG 50 Mens Backpacking Backpack by Osprey against the Men's Optic 55 Ultralight Backpack by Gregory Mountain.
Osprey 's Atmos AG 50 Mens Backpacking Backpack is a Mens backpack with Backpacking features while Gregory Mountain's Men's Optic 55 Ultralight Backpack is a Mens backpack with Backpacking features.
The Osprey Atmos AG 50 Mens Backpacking Backpack has a capacity of 50L (liters), weighs 4.2 pounds and it's dimensions in inches are 32.68 x 14.96 x 15.35. It's made of 100D X 630D Nylon Dobby and is available in 3 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.
Compare Osprey Atmos AG 50 Mens Backpacking Backpack
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Compare Gregory Mountain Men's Optic 55 Ultralight Backpack
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