Cabin Zero Classic Plus 42L vs. Six Moon Design All Day Carry Travel Backpack

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

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

Feature by feature

Cabin Zero Classic Plus 42LFeatureSix Moon Design All Day Carry Travel Backpack
Storage
4 Compression 4
None Expanded Capacity None
1 Opening 1
front Passport front
Y Passthrough Y
Carry
hideable Backpack hideable
N Hip Belt removable
Y Sternum Strap removable
Inside
15in Laptop 15in
2 Main Compartments 4
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
1, side Water Bottle Holder 2, side
Y Water Resistant Y
Material
600 Denier PolyesterRobic Nylon (100D and 200D Challenge Sailcloth EPX200 Challenge Sailcloth ULTRA

Six Moon Design All Day Carry Travel Backpack

Front facing view of the Six Moon Design All Day Carry Travel Backpack
Capacity35 L
Weight1.3 kg
Dimensions55×30×18 cm
Airline fit86%
Price$335

Key differences between the Cabin Zero Classic Plus 42L and Six Moon Design All Day Carry Travel Backpack

Both have: compression straps, passport pocket, luggage passthrough, backpack straps, 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. 162 accept both. 3 accept only the Cabin Zero Classic Plus 42L, and 1 accept only the Six Moon Design All Day Carry Travel Backpack.

Only the Cabin Zero Classic Plus 42L fits

Liat Airlines, Scoot, Tiger Airways.

Only the Six Moon Design All Day Carry Travel Backpack fits

Cayman Airways.

Cabin Zero Classic Plus 42L vs. Six Moon Design All Day Carry Travel Backpack: which should you pack?

The Cabin Zero Classic Plus 42L carries 7L more than the Six Moon Design All Day Carry Travel Backpack (42L vs. 35L), while the Cabin Zero Classic Plus 42L is the lighter pack at 1.2kg (vs. 1.3kg). For carry-on flexibility, the Cabin Zero Classic Plus 42L fits 87% 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 Plus 42L is the better call.