Black Ember Citadel R3 25 vs. Black Ember Citadel 18

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 25FeatureBlack Ember Citadel 18
Storage
N Compression N
None Expanded Capacity None
1 Opening 1
top Passport top
Y Passthrough Y
Carry
Y Backpack Y
N Hip Belt N
removable Sternum Strap removable
Inside
14in Laptop 14in
4 Main Compartments 3
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder N
Y Water Resistant Y
Material
421 VELOCITY CORDURA re/cor RN66420 VELOCITY CORDURA re/cor RN66

Black Ember Citadel 18

Front facing view of the Black Ember Citadel 18
Capacity18 L
Weight1.3 kg
Dimensions43×29×16 cm
Airline fit95%
Price$240

Key differences between the Black Ember Citadel R3 25 and Black Ember Citadel 18

Both have: passport pocket, luggage passthrough, backpack straps, sternum strap, laptop sleeve, 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 8 accept only the Black Ember Citadel 18.

Only the Black Ember Citadel 18 fits

Air Niugini, Air Tahiti, American Eagle, easyJet, Gulf Air, Ravn Alaska, Regional Express, Virgin Australia.

Black Ember Citadel R3 25 vs. Black Ember Citadel 18: which should you pack?

The Black Ember Citadel R3 25 carries 7L more than the Black Ember Citadel 18 (25L vs. 18L), while the Black Ember Citadel 18 is the lighter pack at 1.3kg (vs. 1.6kg). For carry-on flexibility, the Black Ember Citadel 18 fits 95% 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 Black Ember Citadel 18 is the better call.