Gregory Mountain Men's Optic 55 Ultralight Backpack vs Osprey Kestrel 68 Men's Backpacking Backpack

The main difference between the Gregory Mountain Men's Optic 55 Ultralight Backpack and the Osprey Kestrel 68 Men's Backpacking Backpack is that the Men's Optic 55 Ultralight Backpack has Zippers (ComfortGrip custom molded loop zipper pullers) while the Kestrel 68 Men's Backpacking Backpack does not.

Gregory Mountain Products Men's Optic 55 Ultralight Backpack Front View
Osprey Kestrel 68 Men's Backpacking Backpack Front View
Specs Brand Gregory Mountain Osprey
Name Men's Optic 55 Ultralight Backpack Kestrel 68 Men's Backpacking Backpack
Category Mens Backpacking
Sub Category Backpacking Mens
Capacity (L) 55L 68L
Dimensions (in) 23.5 x 12.6 x 4.2 30.7H x 14.6 x 14.6
Weight (lb) 2.4 3.9
Fabric Nylon 210D x 630D Nylon Dobby
Color 2 colors and patterns Black
Warranty The Gregory Limited Lifetime Warranty Osprey Lifetime Warranty
Release Date November 9, 2017
Rating 4.1 4.6
Price Under $225 $250
General Features Shoulder Straps Padded shoulder straps Soft edgeless padded mesh shoulder straps
Sternum / Chest Straps Sternum and chest strap Adjustable sternum strap with rescue whistle
Hip Belt / Waist Strap 3D comfort cradle hipbelt Padded hipbelt
Zippers ComfortGrip custom molded loop zipper pullers
Main Compartment Access U-zip main opening or full body front access Large front panel dual U-zip access
External Pockets 3 external pockets including weather shield hip belt pocket Front panel hybrid shove-it pocket, Zippered sleeping bag compartment with floating divider, zippered hipbelt pockets, and 2 side pockets
Side Pockets Side pockets can hold water bottle Side pockets can fit water bottle and other gears
Water Bottle Yes Yes
Handles Top grab handle
Loops and Attachments Adjustable attachment loop and upper shock lock Daisy chains, ice tool and trekking pole attachments
Travel Features Compression Straps External compression straps External compression straps
Rear Loading Straps Yes
Hiking / Backpacking Features Back Panel Ventilated back panel Breathable AirScape ridged foam backpanel
Rain Cover Yes Integrated removable raincover
Internal / External Frame Aluminum internal frame Internal 3.5 mm LightWire peripheral frame
Ventilated Back Yes
Adjustable Length Torso Adjustable torso length
Hip Belt Pockets Yes
Top / Floating Lid Yes Floating top lid with external zippered pocket and under lid zippered mesh pocket
Trekking Pole Holders Stow-on-the-Go trekking pole attachment
Hydration Features Hydration Compatible Yes Yes

You're currently comparing the Men's Optic 55 Ultralight Backpack by Gregory Mountain against the Kestrel 68 Men's Backpacking Backpack by Osprey .


Gregory Mountain's Men's Optic 55 Ultralight Backpack is a Mens backpack with Backpacking features while Osprey 's Kestrel 68 Men's 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 Kestrel 68 Men's Backpacking Backpack 's capacity is 68L with a size of 30.7H x 14.6 x 14.6 inches. Constructed from 210D x 630D Nylon Dobby it weighs 3.9 pounds and is available in Black.