haize project Clamshell 25 vs. Cabin Zero Military 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 25FeatureCabin Zero Military 28L
Storage
4 Compression 4
None Expanded Capacity None
1 Opening 1
top Passport side
N Passthrough N
Carry
Y Backpack Y
N Hip Belt N
removable Sternum Strap removable
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 polyurethane1000 denier nylon

Cabin Zero Military 28L

Front facing view of the Cabin Zero Military 28L
Capacity28 L
Weight0.8 kg
Dimensions43×30×16 cm
Airline fit95%
Price$126

Key differences between the haize project Clamshell 25 and Cabin Zero Military 28L

Both have: compression straps, backpack straps, 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. 173 accept both. 0 accept only the haize project Clamshell 25, and 7 accept only the Cabin Zero Military 28L.

Only the Cabin Zero Military 28L fits

Air Tahiti, American Eagle, easyJet, Gulf Air, Ravn Alaska, Regional Express, Virgin Australia.

haize project Clamshell 25 vs. Cabin Zero Military 28L: which should you pack?

The Cabin Zero Military 28L carries 3L more than the haize project Clamshell 25 (25L vs. 28L), while the Cabin Zero Military 28L is the lighter pack at 0.8kg (vs. 1.4kg). For carry-on flexibility, the Cabin Zero Military 28L fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Cabin Zero Military 28L; if you want to travel lighter, the Cabin Zero Military 28L is the better call.