STM Dux Backpack vs. Pacsafe Citysafe CX ECONYL Anti-Theft Backpack Tote

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

STM Dux Backpack

by Stm
Front facing view of the STM Dux Backpack
Capacity30 L
Weight1.78 kg
Dimensions50.8×33×24.1 cm
Airline fit39%
Price$250

Feature by feature

STM Dux BackpackFeaturePacsafe Citysafe CX ECONYL Anti-Theft Backpack Tote
Storage
N Compression N
None Expanded Capacity None
4 Opening 4
Y Passport Y
Passthrough Y
Carry
Y Backpack hideable
N Hip Belt N
Y Sternum Strap N
Inside
15in Laptop 12in
1 Main Compartments 1
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
2 Water Bottle Holder 2
Y Water Resistant
Material
500D x 750D Polyester320D ECONYL® regenerated nylon Taslon, 150D Recycled polyester

Pacsafe Citysafe CX ECONYL Anti-Theft Backpack Tote

Front facing view of the Pacsafe Citysafe CX ECONYL Anti-Theft Backpack Tote
Capacity26 L
Weight0.85 kg
Dimensions45×42×14 cm
Airline fit25%
Price$150

Key differences between the STM Dux Backpack and Pacsafe Citysafe CX ECONYL Anti-Theft Backpack Tote

Both have: passport pocket, water bottle pockets.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 47 accept both. 26 accept only the STM Dux Backpack, and 0 accept only the Pacsafe Citysafe CX ECONYL Anti-Theft Backpack Tote.

Only the STM Dux Backpack fits

Aeroflot, Aerolineas Argentinas, Aeromexico, Air France, Air India, Air Mauritius, All Nipon Airways, ANA, Boliviana de Aviacion, Conviasa, Copa Airlines, Frontier Airlines, Gol Linhas Aereas, Indigo, Interjet, Japan Airlines, Jet Airways, Kenya Airways, KLM, LATAM , Middle East Airlines, Monarch Airlines, Peach, Sky Airlines, Southwest Airlines, Sun Country.

STM Dux Backpack vs. Pacsafe Citysafe CX ECONYL Anti-Theft Backpack Tote: which should you pack?

The STM Dux Backpack carries 4L more than the Pacsafe Citysafe CX ECONYL Anti-Theft Backpack Tote (30L vs. 26L), while the Pacsafe Citysafe CX ECONYL Anti-Theft Backpack Tote is the lighter pack at 0.85kg (vs. 1.78kg). For carry-on flexibility, the STM Dux Backpack fits 39% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the STM Dux Backpack; if you want to travel lighter, the Pacsafe Citysafe CX ECONYL Anti-Theft Backpack Tote is the better call.