haize project Clamshell 25 vs. Oppose This Invisible Carry-On
Two carry-on travel backpacks, compared spec for spec.
haize project Clamshell 25
| Capacity | 25 L |
| Weight | 1.4 kg |
| Dimensions | 50×29×17 cm |
| Airline fit | 92% |
| Price | $333 |
Feature by feature
| haize project Clamshell 25 | Feature | Oppose This Invisible Carry-On |
|---|---|---|
| Storage | ||
| 4 | Compression | |
| None | Expanded Capacity | None |
| 1 | Opening | 0 |
| top | Passport | top |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | |
| N | Hip Belt | N |
| removable | Sternum Strap | removable |
| Inside | ||
| 15in | Laptop | 15in |
| 4 | Main Compartments | 4 |
| N | Organizer | Y |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | |
| Y | Water Resistant | Y |
| Material | |
| 1680D RPET polyurethane | Shell: 800x600D lightweight waterproof nylon-polyester blend |
Oppose This Invisible Carry-On
| Capacity | 24 L |
| Weight | 1.5 kg |
| Dimensions | 53×35×15 cm |
| Airline fit | 88% |
| Price | $250 |
Key differences between the haize project Clamshell 25 and Oppose This Invisible Carry-On
- Opening: Clamshell on the haize project Clamshell 25; Other on the Oppose This Invisible Carry-On.
- Built-in organizer: No on the haize project Clamshell 25; Yes on the Oppose This Invisible Carry-On.
Both have: passport pocket, sternum strap, laptop sleeve, water resistant.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 166 accept both. 7 accept only the haize project Clamshell 25, and 0 accept only the Oppose This Invisible Carry-On.
Only the haize project Clamshell 25 fits
Air Niugini, Belavia, Cayman Airways, Etihad Airways, Oman Air, Qatar Airways, Royal Jordanian.
haize project Clamshell 25 vs. Oppose This Invisible Carry-On: which should you pack?
The haize project Clamshell 25 carries 1L more than the Oppose This Invisible Carry-On (25L vs. 24L), while the haize project Clamshell 25 is the lighter pack at 1.4kg (vs. 1.5kg). For carry-on flexibility, the haize project Clamshell 25 fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the haize project Clamshell 25; if you want to travel lighter, the haize project Clamshell 25 is the better call.