July Carry All Backpack 25L vs. Aer Day Pack 3

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 Day Pack 3
Storage
N Compression N
None Expanded Capacity None
0 Opening 1
top Passport top
Y Passthrough Y
Carry
Y Backpack Y
N Hip Belt N
N Sternum Strap Y
Inside
16in Laptop 16in
5 Main Compartments 3
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
1, side Water Bottle Holder 1, side
N Water Resistant Y
Material
420D twill nylon1680D Cordura® ballistic nylon exterior (bluesign® approved)

Aer Day Pack 3

by Aer
Front facing view of the Aer Day Pack 3
Capacity14 L
Weight1.3 kg
Dimensions44×30×14 cm
Airline fit95%
Price$160

Key differences between the July Carry All Backpack 25L and Aer Day Pack 3

Both have: passport pocket, 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. 174 accept both. 0 accept only the July Carry All Backpack 25L, and 6 accept only the Aer Day Pack 3.

Only the Aer Day Pack 3 fits

Air Niugini, Air Tahiti, American Eagle, easyJet, Gulf Air, Ravn Alaska.

July Carry All Backpack 25L vs. Aer Day Pack 3: which should you pack?

The July Carry All Backpack 25L carries 11L more than the Aer Day Pack 3 (25L vs. 14L), while the July Carry All Backpack 25L is the lighter pack at 1kg (vs. 1.3kg). For carry-on flexibility, the Aer Day Pack 3 fits 95% 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.