Boundary Supply Errant Daypack vs. Cabin Zero Military 28L
Two carry-on travel backpacks, compared spec for spec.
Boundary Supply Errant Daypack
| Capacity | 22 L |
| Weight | 1.4 kg |
| Dimensions | 48×26×14 cm |
| Airline fit | 93% |
| Price | $269 |
Feature by feature
| Boundary Supply Errant Daypack | Feature | Cabin Zero Military 28L |
|---|---|---|
| Storage | ||
| 1 | Compression | 4 |
| None | Expanded Capacity | None |
| 1 | Opening | 1 |
| back | Passport | side |
| Y | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| removable | Hip Belt | N |
| removable | Sternum Strap | removable |
| Inside | ||
| 15in | Laptop | 15in |
| 5 | 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 | |
| 500D Duramax Kodra | 1000 denier nylon |
Cabin Zero Military 28L
| Capacity | 28 L |
| Weight | 0.8 kg |
| Dimensions | 43×30×16 cm |
| Airline fit | 95% |
| Price | $126 |
Key differences between the Boundary Supply Errant Daypack and Cabin Zero Military 28L
- Compression straps: 1 on the Boundary Supply Errant Daypack; 4 on the Cabin Zero Military 28L.
- Passport pocket: Back on the Boundary Supply Errant Daypack; Side on the Cabin Zero Military 28L.
- Luggage passthrough: Yes on the Boundary Supply Errant Daypack; No on the Cabin Zero Military 28L.
- Hip belt: Removable on the Boundary Supply Errant Daypack; No on the Cabin Zero Military 28L.
- Main compartments: 5 on the Boundary Supply Errant Daypack; 2 on the Cabin Zero Military 28L.
Both have: 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. 175 accept both. 1 accept only the Boundary Supply Errant Daypack, and 5 accept only the Cabin Zero Military 28L.
Only the Boundary Supply Errant Daypack fits
Great Lakes Airlines.
Only the Cabin Zero Military 28L fits
Air Tahiti, American Eagle, easyJet, Gulf Air, Ravn Alaska.
Boundary Supply Errant Daypack vs. Cabin Zero Military 28L: which should you pack?
The Cabin Zero Military 28L carries 6L more than the Boundary Supply Errant Daypack (22L 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.