Gregory Mountain Men's Inertia 20 H2O Day Hiking Backpack vs Gregory Mountain Nano 18 Backpack

The main difference between the Gregory Mountain Men's Inertia 20 H2O Day Hiking Backpack and the Gregory Mountain Mountain Nano 18 Backpack is that the Men's Inertia 20 H2O Day Hiking Backpack has Zippers (ComfortGrip custom molded loop zipper pullers) while the Mountain Nano 18 Backpack does not.

Gregory Mountain Products Men's Inertia 20 H2O Day Hiking Backpack Front View
Gregory Mountain Products Nano 18 Everyday Outdoor Backpack Front View
Specs Brand Gregory Mountain Gregory Mountain
Name Men's Inertia 20 H2O Day Hiking Backpack Mountain Nano 18 Backpack
Category Mens Backpacking
Sub Category Backpacking Hiking
Capacity (L) 20L 18L
Dimensions (in) 20.08 x 10.83 x 3.15 18.8 x 11.4 x 1.9
Weight (lb) 1.9 1.0
Fabric 100% Nylon Nylon
Color 2 colors and patterns 4 colors and patterns
Warranty The Gregory Limited Lifetime Warranty The Gregory Limited Lifetime Warranty
Release Date November 9, 2017 July 16, 2020
Rating 4.8 4.5
Price Under $75 Under $75
General Features Shoulder Straps Die-cut shoulder harness Air mesh padded shoulder straps
Sternum / Chest Straps Sternum and chest strap Sternum strap
Hip Belt / Waist Strap 3D comfort cradle hipbelt Removable hip belt
Zippers ComfortGrip custom molded loop zipper pullers
Main Compartment Access Normal zipped access Normal zipped access
External Pockets 5 external pockets 1 zipped front pockets and 2 side pockets
Side Pockets Side pockets can fit water bottle and other accessories Side pockets can fit water bottle and other accessories
Water Bottle Yes Yes
Handles Top grab handle Top grab handle
Travel Features Base / Bottom Dual layer bottom panel
Hiking / Backpacking Features Back Panel 3D foam breathable backpanel Padded back panel
Hip Belt Pockets Yes
Trekking Pole Holders Yes
Hydration Features Bladder Size 3 Liter 3D hydro reservoir
Replaceable Bladder Yes
Hydration Compatible Yes Yes

You're currently comparing the Men's Inertia 20 H2O Day Hiking Backpack by Gregory Mountain against the Mountain Nano 18 Backpack by Gregory Mountain .


Gregory Mountain 's Men's Inertia 20 H2O Day Hiking Backpack is a Mens backpack with Backpacking features while Gregory Mountain 's Mountain Nano 18 Backpack is a Backpacking backpack with Hiking features.

The Gregory Mountain Men's Inertia 20 H2O Day Hiking Backpack has a capacity of 20L (liters), weighs 1.9 pounds and it's dimensions in inches are 20.08 x 10.83 x 3.15. It's made of 100% Nylon and is available in 2 colors and patterns in comparison the Gregory Mountain Mountain Nano 18 Backpack's capacity is 18L with a size of 18.8 x 11.4 x 1.9 inches. Constructed from Nylon it weighs 1.0 pounds and is available in 4 colors and patterns.