Gregory Border 25 vs. Gregory Border 18

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

Gregory Border 25

Front facing view of the Gregory Border 25
Capacity25 L
Weight0.9 kg
Dimensions50×33×23 cm
Airline fit72%
Price$140

Feature by feature

Gregory Border 25FeatureGregory Border 18
Storage
N Compression N
None Expanded Capacity None
0 Opening 0
top Passport top
Y Passthrough Y
Carry
Y Backpack Y
N Hip Belt N
Y Sternum Strap Y
Inside
15in Laptop 15in
4 Main Compartments 4
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
1, side Water Bottle Holder N
Y Water Resistant Y
Material
PVC-Free Coated 210D High Density 66 Nylon & 100% Recycled 450D Polyester with C0 DWR: designed without PFAS210D 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 Gregory Border 25 and Gregory Border 18

Both have: passport pocket, luggage passthrough, backpack straps, sternum strap, laptop sleeve, 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. 136 accept both. 0 accept only the Gregory Border 25, and 39 accept only the Gregory Border 18.

Only the Gregory Border 18 fits

Air Baltic, Air China, Air Malta, Air Niugini, Air Serbia, Air Seychelles, Asiana Airlines, ATA Airlines, Belavia, Blue Air, Bulgaria Air, China Eastern, Emirates Airlines, Enter Air, flybe, Icelandair, InselAir, Juneyao Airlines, Liat Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Pakistan International, Regional Express, Royal Brunei Airlines, Ryanair, S7, Shandong Airlines, Shenzhen Airlines, Sun Express, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), TUI, Ukraine International, VIM Airlines (Closed), Virgin Australia, Volotea, Xiamen.

Gregory Border 25 vs. Gregory Border 18: which should you pack?

The Gregory Border 25 carries 7L more than the Gregory Border 18 (25L vs. 18L), while the Gregory Border 18 is the lighter pack at 0.8kg (vs. 0.9kg). For carry-on flexibility, the Gregory Border 18 fits 93% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Gregory Border 25; if you want to travel lighter, the Gregory Border 18 is the better call.