Aer Go Pack vs. Unbox Therapy X Pacsafe 25L Anti-Theft Backpack

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

Aer Go Pack

by Aer
Front facing view of the Aer Go Pack
Capacity21.4 L
Weight0 kg
Dimensions43×30×13 cm
Airline fit95%
Price$85

Feature by feature

Aer Go PackFeatureUnbox Therapy X Pacsafe 25L Anti-Theft Backpack
Storage
N Compression N
None Expanded Capacity None
4 Opening 4
Y Passport Y
Y Passthrough N
Carry
Y Backpack Y
N Hip Belt N
N Sternum Strap N
Inside
13in Laptop 15in
1 Main Compartments 1
N Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
2 Water Bottle Holder 2
Y Water Resistant Y
Material
300D Cordura® ripstop exterior1000D Polina with wax coating, 150D Recycled polyester

Unbox Therapy X Pacsafe 25L Anti-Theft Backpack

Front facing view of the Unbox Therapy X Pacsafe 25L Anti-Theft Backpack
Capacity25 L
Weight1.05 kg
Dimensions47×32×16 cm
Airline fit92%
Price$180

Key differences between the Aer Go Pack and Unbox Therapy X Pacsafe 25L Anti-Theft Backpack

Both have: passport pocket, backpack straps, 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. 174 accept both. 6 accept only the Aer Go Pack, and 0 accept only the Unbox Therapy X Pacsafe 25L Anti-Theft Backpack.

Only the Aer Go Pack fits

Air Niugini, Air Tahiti, American Eagle, easyJet, Gulf Air, Ravn Alaska.

Aer Go Pack vs. Unbox Therapy X Pacsafe 25L Anti-Theft Backpack: which should you pack?

The Unbox Therapy X Pacsafe 25L Anti-Theft Backpack carries 3.6000000000000014L more than the Aer Go Pack (21.4L vs. 25L), and the two are closely matched on weight. For carry-on flexibility, the Aer Go Pack fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Unbox Therapy X Pacsafe 25L Anti-Theft Backpack; if you want to travel lighter, the Unbox Therapy X Pacsafe 25L Anti-Theft Backpack is the better call.