Nomatic Navigator Collapsible Backpack vs. Aer City Pack X-Pac

Two carry-on travel backpacks, compared spec for spec.

Nomatic Navigator Collapsible Backpack

Front facing view of the Nomatic Navigator Collapsible Backpack
Capacity17 L
Weight0.4 kg
Dimensions48×27×15 cm
Airline fit93%
Price$100

Feature by feature

Nomatic Navigator Collapsible BackpackFeatureAer City Pack X-Pac
Storage
N Compression N
20L Expanded Capacity None
4 Opening 1
top Passport top
Y Passthrough Y
Carry
Y Backpack Y
N Hip Belt N
removable Sternum Strap removable
Inside
16in Laptop 16in
2 Main Compartments 4
N Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
2, side Water Bottle Holder 2, side
N Water Resistant Y
Material
Wear- and water-resistant nylonVX-42 X-Pac

Aer City Pack X-Pac

by Aer
Front facing view of the Aer City Pack X-Pac
Capacity14 L
Weight1.1 kg
Dimensions46×30×12 cm
Airline fit94%
Price$180

Key differences between the Nomatic Navigator Collapsible Backpack and Aer City Pack X-Pac

Both have: passport pocket, luggage passthrough, backpack straps, sternum strap, laptop sleeve, water bottle pockets.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 175 accept both. 1 accept only the Nomatic Navigator Collapsible Backpack, and 3 accept only the Aer City Pack X-Pac.

Only the Nomatic Navigator Collapsible Backpack fits

Great Lakes Airlines.

Only the Aer City Pack X-Pac fits

American Eagle, easyJet, Ravn Alaska.

Nomatic Navigator Collapsible Backpack vs. Aer City Pack X-Pac: which should you pack?

The Nomatic Navigator Collapsible Backpack carries 3L more than the Aer City Pack X-Pac (17L vs. 14L), while the Nomatic Navigator Collapsible Backpack is the lighter pack at 0.4kg (vs. 1.1kg). For carry-on flexibility, the Aer City Pack X-Pac fits 94% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Nomatic Navigator Collapsible Backpack; if you want to travel lighter, the Nomatic Navigator Collapsible Backpack is the better call.