The Brown Buffalo Conceal Pack 21L vs. Black Ember Citadel R3 25

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

The Brown Buffalo Conceal Pack 21L

Front facing view of the The Brown Buffalo Conceal Pack 21L
Capacity21 L
Weight1.3 kg
Dimensions50×30×15 cm
Airline fit92%
Price$325

Feature by feature

The Brown Buffalo Conceal Pack 21LFeatureBlack Ember Citadel R3 25
Storage
N Compression N
None Expanded Capacity None
1 Opening 1
front Passport top
Y Passthrough Y
Carry
Y Backpack Y
N Hip Belt N
removable Sternum Strap removable
Inside
15in Laptop 14in
2 Main Compartments 4
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder N
Y Water Resistant Y
Material
Challenge® Sailcloth EPX400421 VELOCITY CORDURA re/cor RN66

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

Key differences between the The Brown Buffalo Conceal Pack 21L and Black Ember Citadel R3 25

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. 1 accept only the The Brown Buffalo Conceal Pack 21L, and 0 accept only the Black Ember Citadel R3 25.

Only the The Brown Buffalo Conceal Pack 21L fits

Air Niugini.

The Brown Buffalo Conceal Pack 21L vs. Black Ember Citadel R3 25: which should you pack?

The Black Ember Citadel R3 25 carries 4L more than the The Brown Buffalo Conceal Pack 21L (21L vs. 25L), while the The Brown Buffalo Conceal Pack 21L is the lighter pack at 1.3kg (vs. 1.6kg). For carry-on flexibility, the The Brown Buffalo Conceal Pack 21L fits 92% 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 The Brown Buffalo Conceal Pack 21L is the better call.