Columbia Tandem Trail Backpack vs Columbia Unisex Atlas Explorer 25L Backpack

The main difference between the Columbia Tandem Trail Backpack and the Columbia Unisex Atlas Explorer 25L Backpack is that the Tandem Trail Backpack has Sternum / Chest Straps (Adjustable sternum strap) while the Unisex Atlas Explorer 25L Backpack does not.

Columbia Tandem Trail Backpack Front View
Columbia Unisex Atlas Explorer 25L Backpack Front view
Specs Brand Columbia Columbia
Name Tandem Trail Backpack Unisex Atlas Explorer 25L Backpack
Category Hiking Laptop
Sub Category Hydration Everyday
Capacity (L) 22L 25L
Dimensions (in) 10.24 x 11.42 x 19.29 20.24 x 14.72 x 3.35
Weight (lb) 1.0 1.0
Fabric 100% Nylon 100% Polyester with PU coating
Color 10 Colors and patterns 4 Colors and patterns
Warranty Columbia Limited Lifetime Warranty Columbia Limited Lifetime Warranty
Rating 4.5 4.3
Price Under $75 Under $100
General Features Shoulder Straps Breathable shoulder straps Contoured padded shoulder straps
Sternum / Chest Straps Adjustable sternum strap
Zippers Reflective zipper pulls
Main Compartment Access Rolltop closure Normal zipped access
External Pockets 2 side pocket 2 side pocket
Side Pockets Side pockets can fit water bottle Side pockets can fit water bottle
Water Bottle Yes Yes
Handles Top grab handle Top haul handle
Loops and Attachments Gear loops Elastic cord and key clip
Lightweight Yes
Business & School Features Laptop Sleeve Laptop sleeve fits laptop up to 15"
Organizer Pocket Front organizer pocket
Travel Features Base / Bottom Flat padded bottom panel
Hiking / Backpacking Features Back Panel Padded quilted backpanel
Trekking Pole Holders Yes
Reflective Safety Strips Reflective safety accents
Gym / Sports Features Laundry Pocket External bungee straps
Hydration Features Hydration Compatible Yes

You're currently comparing the Tandem Trail Backpack by Columbia against the Unisex Atlas Explorer 25L Backpack by Columbia.


Columbia's Tandem Trail Backpack is a Hiking backpack with Hydration features while Columbia's Unisex Atlas Explorer 25L Backpack is a Laptop backpack with Everyday features.

The Columbia Tandem Trail Backpack has a capacity of 22L (liters), weighs 1.0 pounds and it's dimensions in inches are 10.24 x 11.42 x 19.29. It's made of 100% Nylon and is available in 10 Colors and patterns in comparison the Columbia Unisex Atlas Explorer 25L Backpack's capacity is 25L with a size of 20.24 x 14.72 x 3.35 inches. Constructed from 100% Polyester with PU coating it weighs 1.0 pounds and is available in 4 Colors and patterns.