July Carry All Backpack 25L vs. Aer Duffel Pack 3 X-Pac

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

July Carry All Backpack 25L

by July
Capacity25 L
Weight1 kg
Dimensions48×31×17 cm
Airline fit92%
Price$185

Feature by feature

July Carry All Backpack 25LFeatureAer Duffel Pack 3 X-Pac
Storage
N Compression N
None Expanded Capacity None
0 Opening 0
top Passport top, side
Y Passthrough Y
Carry
Y Backpack Y
N Hip Belt N
N Sternum Strap removable
Inside
16in Laptop 16in
5 Main Compartments 5
N Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
1, side Water Bottle Holder 1, side
N Water Resistant Y
Material
420D twill nylonVX-42 X-Pac (also in 1680D Cordura)

Aer Duffel Pack 3 X-Pac

by Aer
Front facing view of the Aer Duffel Pack 3 X-Pac
Capacity21 L
Weight1.3 kg
Dimensions52×30×20 cm
Airline fit88%
Price$210

Key differences between the July Carry All Backpack 25L and Aer Duffel Pack 3 X-Pac

Both have: luggage passthrough, backpack straps, 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. 167 accept both. 7 accept only the July Carry All Backpack 25L, and 0 accept only the Aer Duffel Pack 3 X-Pac.

Only the July Carry All Backpack 25L fits

Belavia, Etihad Airways, Oman Air, Qatar Airways, Regional Express, Royal Jordanian, Virgin Australia.

July Carry All Backpack 25L vs. Aer Duffel Pack 3 X-Pac: which should you pack?

The July Carry All Backpack 25L carries 4L more than the Aer Duffel Pack 3 X-Pac (25L vs. 21L), while the July Carry All Backpack 25L is the lighter pack at 1kg (vs. 1.3kg). For carry-on flexibility, the July Carry All Backpack 25L fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the July Carry All Backpack 25L; if you want to travel lighter, the July Carry All Backpack 25L is the better call.