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.
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 |
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 .
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