System Travel Backpack 31L

Choose the 31L if you prefer a more compact carry for daily use, shorter trips, or lighter packing. It is built to support roughly 3 to 5 days of travel, depending on how you pack. Choose the 41L if you want more capacity for longer trips, heavier packing, or maximum flexibility, at roughly 5 to 7 days. Both sizes share the same features and work with all three System Series accessories.

Yes, it is designed to meet carry-on requirements for most airlines, with expandable capacity when you need more room. Airline size limits vary, so check yours before you fly, especially if you plan to use the expansion. Zip the expansion closed to keep the pack at its more compact size.

Unzip the full perimeter zipper to add about 25% more capacity for extra gear or souvenirs. When you pack lighter, zip it closed to compress the load and return to a slimmer carry.

Key features include a dedicated laptop and tablet compartment, protective coated YKK zippers, theft-deterrent zipper placement on external zippers, quick-access top zip pockets, two expandable water bottle pockets, and a hidden valuables pocket with zipper loops. For comfort and travel, it also has a breathable back panel, stowable waist straps for added support, and a luggage pass-through that slides over a rolling suitcase handle.

The dedicated laptop and tablet compartment keeps your tech separate from the rest of your gear and fits up to a 16-inch laptop. For extra protection, the System Laptop Sleeve slides into the compartment and pulls out as its own slim carry option at your destination. The sleeve is available separately.

The System Series is designed as a modular one-bag travel system. The Hybrid Sling mounts to the pack exterior or across the shoulder straps for chest carry, and it also stows in the upper FlexVolume pocket. The Laptop Sleeve slides into the dedicated laptop compartment. One Large and two Medium packing cubes fit snugly in one half of the main compartment, and the pack's expansion zipper lets you compress the load. Each accessory is available separately.

Yes. It is built with water-resistant 500D CORDURA and YKK zippers, designed to help protect your gear from light rain and splashes during daily use and travel. Water-resistant is not the same as waterproof, so keep your tech protected in heavy rain.

Yes. The lower FlexVolume pocket holds shoes or laundry and opens from the outside, so you can grab them without unpacking the main compartment and keep them apart from clean clothes.