Boundary Supply Errant Daypack vs. Aer Travel Pack 2 Small
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 | Aer Travel Pack 2 Small |
|---|---|---|
| Storage | ||
| 1 | Compression | 4 |
| None | Expanded Capacity | None |
| 1 | Opening | 1 |
| back | Passport | top, side |
| Y | Passthrough | Y |
| Carry | ||
| Y | Backpack | Y |
| removable | Hip Belt | optional |
| removable | Sternum Strap | removable |
| Inside | ||
| 15in | Laptop | 16in |
| 5 | Main Compartments | 5 |
| N | Organizer | Y |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | 1, side |
| Y | Water Resistant | Y |
| Material | |
| 500D Duramax Kodra | 700D Cordura |
Aer Travel Pack 2 Small
| Capacity | 28 L |
| Weight | 1.7 kg |
| Dimensions | 48×33×19 cm |
| Airline fit | 92% |
| Price | $229 |
Key differences between the Boundary Supply Errant Daypack and Aer Travel Pack 2 Small
- Compression straps: 1 on the Boundary Supply Errant Daypack; 4 on the Aer Travel Pack 2 Small.
- Passport pocket: Back on the Boundary Supply Errant Daypack; Top, side on the Aer Travel Pack 2 Small.
- Hip belt: Removable on the Boundary Supply Errant Daypack; Optional on the Aer Travel Pack 2 Small.
- Laptop sleeve: 15in on the Boundary Supply Errant Daypack; 16in on the Aer Travel Pack 2 Small.
- Built-in organizer: No on the Boundary Supply Errant Daypack; Yes on the Aer Travel Pack 2 Small.
Both have: luggage passthrough, backpack straps, sternum strap, 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. 174 accept both. 2 accept only the Boundary Supply Errant Daypack, and 0 accept only the Aer Travel Pack 2 Small.
Only the Boundary Supply Errant Daypack fits
Air Niugini, Great Lakes Airlines.
Boundary Supply Errant Daypack vs. Aer Travel Pack 2 Small: which should you pack?
The Aer Travel Pack 2 Small carries 6L more than the Boundary Supply Errant Daypack (22L vs. 28L), while the Boundary Supply Errant Daypack is the lighter pack at 1.4kg (vs. 1.7kg). For carry-on flexibility, the Boundary Supply Errant Daypack fits 93% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Aer Travel Pack 2 Small; if you want to travel lighter, the Boundary Supply Errant Daypack is the better call.