Osprey Flapjack vs. Rehose Barrel

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

Osprey Flapjack

Front facing view of the Osprey Flapjack
Capacity21 L
Weight0.9 kg
Dimensions49×34×23 cm
Airline fit72%
Price$110

Feature by feature

Osprey FlapjackFeatureRehose Barrel
Storage
Compression
None Expanded Capacity None
0 Opening 0
side Passport top
N Passthrough N
Carry
Y Backpack
removable Hip Belt N
Sternum Strap removable
Inside
15in Laptop 15in
3 Main Compartments 3
Y Organizer N
Outside
× Hard Shell ×
N Rain-fly N
Water Bottle Holder
Y Water Resistant Y
Material
600D Polyspun1000D Cordura black500D Cordura colored lining

Rehose Barrel

Front facing view of the Rehose Barrel
Capacity28 L
Weight0 kg
Dimensions51×30×21 cm
Airline fit72%
Price$210

Key differences between the Osprey Flapjack and Rehose Barrel

Both have: 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. 134 accept both. 2 accept only the Osprey Flapjack, and 2 accept only the Rehose Barrel.

Only the Osprey Flapjack fits

Etihad Airways, Qatar Airways.

Only the Rehose Barrel fits

Liat Airlines, Pakistan International.

Osprey Flapjack vs. Rehose Barrel: which should you pack?

The Rehose Barrel carries 7L more than the Osprey Flapjack (21L vs. 28L), and the two are closely matched on weight. For carry-on flexibility, the Osprey Flapjack fits 72% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Rehose Barrel; if you want to travel lighter, the Osprey Flapjack is the better call.