Black Ember Citadel R3 25 vs. Aer City Pack Pro 2

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

Black Ember Citadel R3 25

Front facing view of the Black Ember Citadel R3 25
Capacity25 L
Weight1.6 kg
Dimensions50×31×18 cm
Airline fit91%
Price$280

Feature by feature

Black Ember Citadel R3 25FeatureAer City Pack Pro 2
Storage
N Compression N
None Expanded Capacity None
1 Opening 1
top Passport top, side
Y Passthrough Y
Carry
Y Backpack Y
N Hip Belt N
removable Sternum Strap removable
Inside
14in Laptop 16in
4 Main Compartments 4
N Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder 2, side
Y Water Resistant Y
Material
421 VELOCITY CORDURA re/cor RN661680D CORDURA® ballistic nylon

Aer City Pack Pro 2

by Aer
Front facing view of the Aer City Pack Pro 2
Capacity24 L
Weight1.3 kg
Dimensions46×32×18 cm
Airline fit94%
Price$210

Key differences between the Black Ember Citadel R3 25 and Aer City Pack Pro 2

Both have: luggage passthrough, backpack straps, sternum strap, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 172 accept both. 0 accept only the Black Ember Citadel R3 25, and 5 accept only the Aer City Pack Pro 2.

Only the Aer City Pack Pro 2 fits

American Eagle, easyJet, Ravn Alaska, Regional Express, Virgin Australia.

Black Ember Citadel R3 25 vs. Aer City Pack Pro 2: which should you pack?

The Black Ember Citadel R3 25 carries 1L more than the Aer City Pack Pro 2 (25L vs. 24L), while the Aer City Pack Pro 2 is the lighter pack at 1.3kg (vs. 1.6kg). For carry-on flexibility, the Aer City Pack Pro 2 fits 94% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Black Ember Citadel R3 25; if you want to travel lighter, the Aer City Pack Pro 2 is the better call.