Cabin Zero Classic Cabin Backpack 36L vs. Cabin Zero Classic Plus 42L

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

Cabin Zero Classic Cabin Backpack 36L

Front facing view of the Cabin Zero Classic Cabin Backpack 36L
Capacity36 L
Weight0.7 kg
Dimensions45×31×20 cm
Airline fit95%
Price$100

Feature by feature

Cabin Zero Classic Cabin Backpack 36LFeatureCabin Zero Classic Plus 42L
Storage
4 Compression 4
None Expanded Capacity None
1 Opening 1
front Passport front
N Passthrough Y
Carry
Y Backpack hideable
N Hip Belt N
N Sternum Strap Y
Inside
15in Laptop 15in
2 Main Compartments 2
N Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
1, side Water Bottle Holder 1, side
Y Water Resistant Y
Material
600 Denier Polyester600 Denier Polyester

Cabin Zero Classic Plus 42L

Front facing view of the Cabin Zero Classic Plus 42L
Capacity42 L
Weight1.2 kg
Dimensions54×35×20 cm
Airline fit87%
Price$122

Key differences between the Cabin Zero Classic Cabin Backpack 36L and Cabin Zero Classic Plus 42L

Both have: compression straps, passport pocket, laptop sleeve, 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. 165 accept both. 14 accept only the Cabin Zero Classic Cabin Backpack 36L, and 0 accept only the Cabin Zero Classic Plus 42L.

Only the Cabin Zero Classic Cabin Backpack 36L fits

Air Tahiti, American Eagle, Belavia, Cayman Airways, easyJet, Etihad Airways, Gulf Air, Oman Air, Qatar Airways, Ravn Alaska, Regional Express, Royal Jordanian, Virgin Australia, WestJet.

Cabin Zero Classic Cabin Backpack 36L vs. Cabin Zero Classic Plus 42L: which should you pack?

The Cabin Zero Classic Plus 42L carries 6L more than the Cabin Zero Classic Cabin Backpack 36L (36L vs. 42L), while the Cabin Zero Classic Cabin Backpack 36L is the lighter pack at 0.7kg (vs. 1.2kg). For carry-on flexibility, the Cabin Zero Classic Cabin Backpack 36L fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Cabin Zero Classic Plus 42L; if you want to travel lighter, the Cabin Zero Classic Cabin Backpack 36L is the better call.