United by Blue (R)evolution 25L Convertible Carryall vs. Chrome Rostov

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

United by Blue (R)evolution 25L Convertible Carryall

Capacity25 L
Weight0 kg
Dimensions39×34×13 cm
Airline fit96%
Price$120

Feature by feature

United by Blue (R)evolution 25L Convertible CarryallFeatureChrome Rostov
Storage
N Compression 2
None Expanded Capacity None
0 Opening 0
front Passport front
N Passthrough N
Carry
hideable Backpack Y
N Hip Belt N
removable Sternum Strap removable
Inside
15in Laptop 15in
2 Main Compartments 2
N Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
2, side Water Bottle Holder 1, side
Y Water Resistant Y
Material
Abrasion resistant 1050d nylon exterior 1680d ballistic nylon bottom panel

Chrome Rostov

Front facing view of the Chrome Rostov
Capacity23 L
Weight0.9 kg
Dimensions47×31×16 cm
Airline fit92%
Price$115

Key differences between the United by Blue (R)evolution 25L Convertible Carryall and Chrome Rostov

Both have: passport pocket, 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. 174 accept both. 7 accept only the United by Blue (R)evolution 25L Convertible Carryall, and 0 accept only the Chrome Rostov.

Only the United by Blue (R)evolution 25L Convertible Carryall fits

Air Tahiti, American Eagle, easyJet, Gulf Air, Ravn Alaska, VivaColombia, Volaris.

United by Blue (R)evolution 25L Convertible Carryall vs. Chrome Rostov: which should you pack?

The United by Blue (R)evolution 25L Convertible Carryall carries 2L more than the Chrome Rostov (25L vs. 23L), and the two are closely matched on weight. For carry-on flexibility, the United by Blue (R)evolution 25L Convertible Carryall fits 96% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the United by Blue (R)evolution 25L Convertible Carryall; if you want to travel lighter, the Chrome Rostov is the better call.