haize project Clamshell 25 vs. CabinZero Classic 28L

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

haize project Clamshell 25

Front facing view of the haize project Clamshell 25
Capacity25 L
Weight1.4 kg
Dimensions50×29×17 cm
Airline fit92%
Price$333

Feature by feature

haize project Clamshell 25FeatureCabinZero Classic 28L
Storage
4 Compression 4
None Expanded Capacity None
1 Opening 1
top Passport front
N Passthrough N
Carry
Y Backpack Y
N Hip Belt N
removable Sternum Strap N
Inside
15in Laptop 15in
4 Main Compartments 2
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
1, side Water Bottle Holder 1, side
Y Water Resistant Y
Material
1680D RPET polyurethane600 Denier Polyester

CabinZero Classic 28L

Front facing view of the CabinZero Classic 28L
Capacity28 L
Weight0.6 kg
Dimensions39×30×20 cm
Airline fit98%
Price$93

Key differences between the haize project Clamshell 25 and CabinZero Classic 28L

Both have: compression straps, backpack straps, 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. 173 accept both. 0 accept only the haize project Clamshell 25, and 13 accept only the CabinZero Classic 28L.

Only the CabinZero Classic 28L fits

Air Tahiti, American Eagle, easyJet, Gulf Air, LC Perú, Lion Air Group, Ravn Alaska, Regional Express, Spring Airlines, Virgin Australia, VivaColombia, Volaris, Wizz Air.

haize project Clamshell 25 vs. CabinZero Classic 28L: which should you pack?

The CabinZero Classic 28L carries 3L more than the haize project Clamshell 25 (25L vs. 28L), while the CabinZero Classic 28L is the lighter pack at 0.6kg (vs. 1.4kg). For carry-on flexibility, the CabinZero Classic 28L fits 98% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the CabinZero Classic 28L; if you want to travel lighter, the CabinZero Classic 28L is the better call.