Ryu Flex Pack 20L vs. Pacsafe Metrosafe X Anti-Theft 20L Backpack

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

Ryu Flex Pack 20L

by RYU
Front facing view of the Ryu Flex Pack 20L
Capacity20 L
Weight0 kg
Dimensions46×31×18 cm
Airline fit94%
Price$98

Feature by feature

Ryu Flex Pack 20LFeaturePacsafe Metrosafe X Anti-Theft 20L Backpack
Storage
N Compression N
None Expanded Capacity None
4 Opening 4
N Passport Y
N Passthrough N
Carry
Y Backpack Y
N Hip Belt N
removable Sternum Strap N
Inside
15in Laptop 15in
1 Main Compartments 1
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
1 Water Bottle Holder 1
Y Water Resistant Y
Material
100% nylon with silicone coating and Polygiene® finish750D Recycled polyester, 150D Recycled polyester

Pacsafe Metrosafe X Anti-Theft 20L Backpack

Front facing view of the Pacsafe Metrosafe X Anti-Theft 20L Backpack
Capacity20 L
Weight0.73 kg
Dimensions45×30×13 cm
Airline fit95%
Price$140

Key differences between the Ryu Flex Pack 20L and Pacsafe Metrosafe X Anti-Theft 20L Backpack

Both have: backpack straps, laptop sleeve, built-in organizer, water bottle pockets, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 177 accept both. 0 accept only the Ryu Flex Pack 20L, and 3 accept only the Pacsafe Metrosafe X Anti-Theft 20L Backpack.

Only the Pacsafe Metrosafe X Anti-Theft 20L Backpack fits

Air Niugini, Air Tahiti, Gulf Air.

Ryu Flex Pack 20L vs. Pacsafe Metrosafe X Anti-Theft 20L Backpack: which should you pack?

The Ryu Flex Pack 20L carries the same capacity as the Pacsafe Metrosafe X Anti-Theft 20L Backpack (20L vs. 20L), and the two are closely matched on weight. For carry-on flexibility, the Pacsafe Metrosafe X Anti-Theft 20L Backpack fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Ryu Flex Pack 20L; if you want to travel lighter, the Pacsafe Metrosafe X Anti-Theft 20L Backpack is the better call.