Bellroy Classic Backpack Plus vs. STM Kings

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

Bellroy Classic Backpack Plus

Front facing view of the Bellroy Classic Backpack Plus
Capacity22 L
Weight1 kg
Dimensions52×30×21 cm
Airline fit71%
Price$179

Feature by feature

Bellroy Classic Backpack PlusFeatureSTM Kings
Storage
N Compression N
None Expanded Capacity None
4 Opening 4
Y Passport N
N Passthrough N
Carry
Y Backpack Y
N Hip Belt N
N Sternum Strap N
Inside
15in Laptop 15in
1 Main Compartments 2
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder 2
Y Water Resistant Y
Material
Venture-weave polyester and leather100% polyester

STM Kings

by Stm
Front facing view of the STM Kings
Capacity22 L
Weight0.95 kg
Dimensions47.5×30×17 cm
Airline fit93%
Price$150

Key differences between the Bellroy Classic Backpack Plus and STM Kings

Both have: backpack straps, laptop sleeve, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 134 accept both. 0 accept only the Bellroy Classic Backpack Plus, and 41 accept only the STM Kings.

Only the STM Kings 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, Etihad Airways, flybe, Icelandair, InselAir, Juneyao Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Oman Air, Qatar Airways, Regional Express, Royal Brunei Airlines, Royal Jordanian, 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.

Bellroy Classic Backpack Plus vs. STM Kings: which should you pack?

The Bellroy Classic Backpack Plus carries the same capacity as the STM Kings (22L vs. 22L), while the STM Kings is the lighter pack at 0.95kg (vs. 1kg). For carry-on flexibility, the STM Kings fits 93% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Bellroy Classic Backpack Plus; if you want to travel lighter, the STM Kings is the better call.