Mountaintop 40L Hiking Backpack vs Gregory Mountain Nano 20 Backpack

The main difference between the Mountaintop 40L Hiking Backpack and the Gregory Mountain Nano 20 Backpack is that the 40L Hiking Backpack has Water Proof / Water Resistant (Water resistant material ) while the Nano 20 Backpack does not.

Mountaintop 40L Hiking Backpack FRont View
Gregory Mountain Products Nano 20 Everyday Outdoor Backpack 1st Front View
Specs Brand Mountaintop Gregory Mountain
Name 40L Hiking Backpack Nano 20 Backpack
Category Hiking Backpacking
Sub Category Outdoor Hiking
Capacity (L) 40L 20L
Dimensions (in) 20.1 x 13.8 x 6.3 19.2 x 1.7 x 1
Weight (lb) 2.1 1.5
Fabric Polyester Nylon
Color 20+ colors and patterns Obsidian Black
Warranty Mountaintop Warranty The Gregory Limited Lifetime Warranty
Release Date August 1, 2016
Rating 4.6 4.0
Price Under $50 Under $75
General Features Shoulder Straps S-curve sponge padded shoulder strap Air mesh padded shoulder straps
Sternum / Chest Straps Elastic chest strap Sternum strap
Hip Belt / Waist Strap Adjustable waist belt Removable hip belt
Water Proof / Water Resistant Water resistant material
Zippers YKK zippers
Main Compartment Access Normal zipped access Normal zipped access
External Pockets Zipped top, middle and bottom pockets plus two side pockets 1 zipped front pocket and 2 side pockets
Internal Compartments Spacious main compartment with pockets
Side Pockets Side pockets can fit water bottle or umbrella Side pockets can fit water bottle and other accessories
Water Bottle Yes Yes
Handles Top grab handle Top grab handle
Business & School Features Laptop Sleeve Laptop pocket fits up to 17"
Tablet Sleeve Separate tablet pocket Tablet sleeve fits up to 10”
Organizer Pocket Front utility pocket
Travel Features Carry-on Size Compliant 40.2 linear inches carry on size compliant
Compression Straps External compression straps
Hiking / Backpacking Features Back Panel Breathable padded back panel Breathable back panel
Rain Cover Rain cover included
Ventilated Back Air diversion back system
Trekking Pole Holders Hiking pole attachment
Gym / Sports Features Shoe Compartment Bottom compartment for shoes
Hydration Features Hydration Compatible Yes

You're currently comparing the 40L Hiking Backpack by Mountaintop against the Nano 20 Backpack by Gregory Mountain .


Mountaintop 's 40L Hiking Backpack is a Hiking backpack with Outdoor features while Gregory Mountain 's Nano 20 Backpack is a Backpacking backpack with Hiking features.

The Mountaintop 40L Hiking Backpack has a capacity of 40L (liters), weighs 2.1 pounds and it's dimensions in inches are 20.1 x 13.8 x 6.3 . It's made of Polyester and is available in 20+ colors and patterns in comparison the Gregory Mountain Nano 20 Backpack's capacity is 20L with a size of 19.2 x 1.7 x 1 inches. Constructed from Nylon it weighs 1.5 pounds and is available in Obsidian Black.