Cotopaxi Allpa 28 vs. Cabin Zero Classic Pro 42L

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

Cotopaxi Allpa 28

Front facing view of the Cotopaxi Allpa 28
Capacity28 L
Weight1 kg
Dimensions48×30×23 cm
Airline fit73%
Price$200

Feature by feature

Cotopaxi Allpa 28FeatureCabin Zero Classic Pro 42L
Storage
N Compression 4
None Expanded Capacity None
1 Opening 1
side Passport N
Y Passthrough Y
Carry
hideable Backpack hideable
hideable Hip Belt hideable
Y Sternum Strap Y
Inside
15in Laptop 15in
4 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
100% recycled 840D TPU-coated nylon600 Denier Polyester

Cabin Zero Classic Pro 42L

Front facing view of the Cabin Zero Classic Pro 42L
Capacity42 L
Weight1.4 kg
Dimensions54×35×20 cm
Airline fit87%
Price$184

Key differences between the Cotopaxi Allpa 28 and Cabin Zero Classic Pro 42L

Both have: luggage passthrough, backpack straps, hip belt, sternum strap, 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. 130 accept both. 8 accept only the Cotopaxi Allpa 28, and 35 accept only the Cabin Zero Classic Pro 42L.

Only the Cotopaxi Allpa 28 fits

Cayman Airways, Etihad Airways, Oman Air, Qatar Airways, Regional Express, Royal Jordanian, Virgin Australia, WestJet.

Only the Cabin Zero Classic Pro 42L fits

Air Baltic, Air China, Air Malta, Air Serbia, Air Seychelles, Asiana Airlines, ATA Airlines, Blue Air, Bulgaria Air, China Eastern, Emirates Airlines, Enter Air, flybe, Icelandair, InselAir, Juneyao Airlines, Liat Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Pakistan International, 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), Volotea, Xiamen.

Cotopaxi Allpa 28 vs. Cabin Zero Classic Pro 42L: which should you pack?

The Cabin Zero Classic Pro 42L carries 14L more than the Cotopaxi Allpa 28 (28L vs. 42L), while the Cotopaxi Allpa 28 is the lighter pack at 1kg (vs. 1.4kg). For carry-on flexibility, the Cabin Zero Classic Pro 42L fits 87% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Cabin Zero Classic Pro 42L; if you want to travel lighter, the Cotopaxi Allpa 28 is the better call.