Aer Travel Pack 2 Small vs. Boundary Supply Prima
Two carry-on travel backpacks, compared spec for spec.
Aer Travel Pack 2 Small
| Capacity | 28 L |
| Weight | 1.7 kg |
| Dimensions | 48×33×19 cm |
| Airline fit | 92% |
| Price | $229 |
Feature by feature
| Aer Travel Pack 2 Small | Feature | Boundary Supply Prima |
|---|---|---|
| Storage | ||
| 4 | Compression | 2 |
| None | Expanded Capacity | None |
| 1 | Opening | 3 |
| top, side | Passport | top |
| Y | Passthrough | Y |
| Carry | ||
| Y | Backpack | Y |
| optional | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside | ||
| 16in | Laptop | 16in |
| 5 | Main Compartments | 0 |
| Y | Organizer | Y |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | 1, side |
| Y | Water Resistant | Y |
| Material | |
| 700D Cordura | 500D Kodra Nylon YKK StormGuard |
Boundary Supply Prima
| Capacity | 30 L |
| Weight | 1.9 kg |
| Dimensions | 53×31×18 cm |
| Airline fit | 88% |
| Price | $319 |
Key differences between the Aer Travel Pack 2 Small and Boundary Supply Prima
- Compression straps: 4 on the Aer Travel Pack 2 Small; 2 on the Boundary Supply Prima.
- Opening: Clamshell on the Aer Travel Pack 2 Small; Top flap on the Boundary Supply Prima.
- Passport pocket: Top, side on the Aer Travel Pack 2 Small; Top on the Boundary Supply Prima.
- Hip belt: Optional on the Aer Travel Pack 2 Small; Removable on the Boundary Supply Prima.
Both have: luggage passthrough, backpack straps, sternum strap, laptop sleeve, built-in organizer, 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. 167 accept both. 7 accept only the Aer Travel Pack 2 Small, and 0 accept only the Boundary Supply Prima.
Only the Aer Travel Pack 2 Small fits
Belavia, Etihad Airways, Oman Air, Qatar Airways, Regional Express, Royal Jordanian, Virgin Australia.
Aer Travel Pack 2 Small vs. Boundary Supply Prima: which should you pack?
The Boundary Supply Prima carries 2L more than the Aer Travel Pack 2 Small (28L vs. 30L), while the Aer Travel Pack 2 Small is the lighter pack at 1.7kg (vs. 1.9kg). For carry-on flexibility, the Aer Travel Pack 2 Small fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Boundary Supply Prima; if you want to travel lighter, the Aer Travel Pack 2 Small is the better call.