Gregory Mountain Nano 20 Backpack vs TETON Sports Explorer 4000 Backpack

The main difference between the Gregory Mountain Nano 20 Backpack and the TETON Sports Explorer 4000 Backpack is that the Nano 20 Backpack has Tablet Sleeve (Tablet sleeve fits up to 10”) while the Explorer 4000 Backpack does not.

Gregory Mountain Products Nano 20 Everyday Outdoor Backpack 1st Front View
TETON Sports Explorer 4000 Backpack Front View
Specs Brand Gregory Mountain TETON Sports
Name Nano 20 Backpack Explorer 4000 Backpack
Category Backpacking Hiking
Sub Category Hiking Travel
Capacity (L) 20L 65L
Dimensions (in) 19.2 x 1.7 x 1 32 x 18 x 12
Weight (lb) 1.5 5
Fabric Nylon Sturdy 600D Ripstop and Oxford Canvas Shell
Color Obsidian Black 4 colors and patterns
Warranty The Gregory Limited Lifetime Warranty TETON Sports Lifetime Warranty
Release Date May 1, 2006
Rating 4.0 4.7
Price Under $75 Under $100
General Features Shoulder Straps Air mesh padded shoulder straps Contoured, adjustable, padded shoulder straps
Sternum / Chest Straps Sternum strap Adjustable sternum strap
Hip Belt / Waist Strap Removable hip belt Padded waist straps with wide locking hip straps
Zippers Weather-guard zippers
Main Compartment Access Normal zipped access Top access
External Pockets 1 zipped front pocket and 2 side pockets Front mesh pocket, 1 zipped bottom pocket, and 5 side pockets
Side Pockets Side pockets can fit water bottle and other accessories Side pockets can hold water bottle, tent poles and trekking poles
Water Bottle Yes Yes
Handles Top grab handle Top grab handle
Loops and Attachments Gear loops, daisy chains, and D-rings
Business & School Features Tablet Sleeve Tablet sleeve fits up to 10”
Travel Features Compression Straps Multi-directional external compression straps
Rear Loading Straps Bottom load straps
Hiking / Backpacking Features Back Panel Breathable back panel Padded back panel with open-cell foam lumbar pad and molded channels
Rain Cover Rainfly included
Internal / External Frame Internal frame
Ergonomic Ergonomic design
Adjustable Length Torso Multi-position torso adjustments
Trekking Pole Holders Side pockets can hold tent poles and trekking poles
Hydration Features Bladder Size Holds up to 3L hydration bladder
Hydration Compatible Yes Yes

You're currently comparing the Nano 20 Backpack by Gregory Mountain against the Explorer 4000 Backpack by TETON Sports .


Gregory Mountain 's Nano 20 Backpack is a Backpacking backpack with Hiking features while TETON Sports 's Explorer 4000 Backpack is a Hiking backpack with Travel features.

The Gregory Mountain Nano 20 Backpack has a capacity of 20L (liters), weighs 1.5 pounds and it's dimensions in inches are 19.2 x 1.7 x 1. It's made of Nylon and is available in Obsidian Black in comparison the TETON Sports Explorer 4000 Backpack's capacity is 65L with a size of 32 x 18 x 12 inches. Constructed from Sturdy 600D Ripstop and Oxford Canvas Shell it weighs 5 pounds and is available in 4 colors and patterns .