GORUCK GR1 USA - X-PAC vs. Black Ember Citadel 18

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

GORUCK GR1 USA - X-PAC

Front facing view of the GORUCK GR1 USA - X-PAC
Capacity21 L
Weight1 kg
Dimensions46×29×14 cm
Airline fit94%
Price$335

Feature by feature

GORUCK GR1 USA - X-PACFeatureBlack Ember Citadel 18
Storage
N Compression N
None Expanded Capacity None
1 Opening 1
top Passport top
N Passthrough Y
Carry
Y Backpack Y
N Hip Belt N
N Sternum Strap removable
Inside
15in Laptop 14in
3 Main Compartments 3
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder N
Y Water Resistant Y
Material
XPAC VX21420 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 GORUCK GR1 USA - X-PAC and Black Ember Citadel 18

Both have: passport pocket, backpack straps, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 178 accept both. 0 accept only the GORUCK GR1 USA - X-PAC, and 2 accept only the Black Ember Citadel 18.

Only the Black Ember Citadel 18 fits

Air Tahiti, Gulf Air.

GORUCK GR1 USA - X-PAC vs. Black Ember Citadel 18: which should you pack?

The GORUCK GR1 USA - X-PAC carries 3L more than the Black Ember Citadel 18 (21L vs. 18L), while the GORUCK GR1 USA - X-PAC is the lighter pack at 1kg (vs. 1.3kg). 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 GORUCK GR1 USA - X-PAC; if you want to travel lighter, the GORUCK GR1 USA - X-PAC is the better call.