Aer Pro Pack 20L vs. Gregory Border 18

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

Aer Pro Pack 20L

by Aer
Front facing view of the Aer Pro Pack 20L
Capacity20 L
Weight1.1 kg
Dimensions45×31×14 cm
Airline fit95%
Price$180

Feature by feature

Aer Pro Pack 20LFeatureGregory Border 18
Storage
N Compression N
None Expanded Capacity None
1 Opening 0
top Passport top
Y Passthrough Y
Carry
Y Backpack Y
N Hip Belt N
Y Sternum Strap Y
Inside
16in Laptop 15in
4 Main Compartments 4
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
2, side Water Bottle Holder N
Y Water Resistant Y
Material
840D CORDURA re/cor recycled nylon210D High Density Nylon

Gregory Border 18

Front facing view of the Gregory Border 18
Capacity18 L
Weight0.8 kg
Dimensions47×29×16 cm
Airline fit93%
Price$120

Key differences between the Aer Pro Pack 20L and Gregory Border 18

Both have: passport pocket, luggage passthrough, backpack straps, sternum strap, built-in organizer, 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. 5 accept only the Aer Pro Pack 20L, and 1 accept only the Gregory Border 18.

Only the Aer Pro Pack 20L fits

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

Only the Gregory Border 18 fits

Air Niugini.

Aer Pro Pack 20L vs. Gregory Border 18: which should you pack?

The Aer Pro Pack 20L carries 2L more than the Gregory Border 18 (20L vs. 18L), while the Gregory Border 18 is the lighter pack at 0.8kg (vs. 1.1kg). For carry-on flexibility, the Aer Pro Pack 20L fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Aer Pro Pack 20L; if you want to travel lighter, the Gregory Border 18 is the better call.