Gregory Mountain Targhee 45 Backpack vs Gregory Mountain Men's Optic 55 Ultralight Backpack

The main difference between the Gregory Mountain Targhee 45 Backpack and the Gregory Mountain Men's Optic 55 Ultralight Backpack is that the Targhee 45 Backpack has Internal Compartments (Internal hydration sleeve with hose routing loops, universal reservoir hanger, and hydration port) while the Men's Optic 55 Ultralight Backpack does not.

Gregory Mountain Targhee 45 Backpack
Gregory Mountain Products Men's Optic 55 Ultralight Backpack Front View
Specs Brand Gregory Mountain Gregory Mountain
Name Targhee 45 Backpack Men's Optic 55 Ultralight Backpack
Category Sports Mens
Sub Category Ski Backpacking
Capacity (L) 45L 55L
Dimensions (in) 30.5 x 11.5 x 11.5 23.5 x 12.6 x 4.2
Weight (lb) 3.7 2.4
Fabric 1000D Cordura Diagonal Edge Guard Nylon
Color 2 colors and patterns 2 colors and patterns
Warranty The Gregory Limited Lifetime Warranty The Gregory Limited Lifetime Warranty
Release Date July 10, 2019 November 9, 2017
Rating 4.1 4.1
Price Under $225 Under $225
General Features Shoulder Straps Padded shoulder straps with insulated hose sleeve Padded shoulder straps
Sternum / Chest Straps Sternum strap with integrated safety whistle Sternum and chest strap
Hip Belt / Waist Strap Padded hipbelt with zippered pockets and gear loop 3D comfort cradle hipbelt
Zippers Reflective webbing pullers ComfortGrip custom molded loop zipper pullers
Main Compartment Access Full U-zip back access U-zip main opening or full body front access
External Pockets Floating top pocket, and 2 zipped front pockets 3 external pockets including weather shield hip belt pocket
Internal Compartments Internal hydration sleeve with hose routing loops, universal reservoir hanger, and hydration port
Side Pockets Side pockets can hold water bottle
Water Bottle Yes
Handles Top grab handle Top grab handle
Loops and Attachments Front straps with aluminum hooks, universal ice tool attachments, deployable helmet carry Adjustable attachment loop and upper shock lock
Business & School Features Organizer Pocket Front zippered pocket with organizer
Travel Features Compression Straps External compression straps with cam locking buckles External compression straps
Rear Loading Straps Yes Yes
Base / Bottom Dual layered bottom panel
Hiking / Backpacking Features Back Panel Snow shedding back panel Ventilated back panel
Rain Cover Yes
Internal / External Frame Internal frame Aluminum internal frame
Ventilated Back Yes
Adjustable Length Torso 18-20in torso length
Hip Belt Pockets Yes Yes
Top / Floating Lid Yes Yes
Hydration Features Hydration Compatible Yes Yes

You're currently comparing the Targhee 45 Backpack by Gregory Mountain against the Men's Optic 55 Ultralight Backpack by Gregory Mountain.


Gregory Mountain 's Targhee 45 Backpack is a Sports backpack with Ski features while Gregory Mountain's Men's Optic 55 Ultralight Backpack is a Mens backpack with Backpacking features.

The Gregory Mountain Targhee 45 Backpack has a capacity of 45L (liters), weighs 3.7 pounds and it's dimensions in inches are 30.5 x 11.5 x 11.5. It's made of 1000D Cordura Diagonal Edge Guard 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.