Bellroy Shift Backpack vs. Boundary Supply Errant X-Pac
Two carry-on travel backpacks, compared spec for spec.
Bellroy Shift Backpack
| Capacity | 22 L |
| Weight | 1.25 kg |
| Dimensions | 55×30×20 cm |
| Airline fit | 86% |
| Price | $169 |
Feature by feature
| Bellroy Shift Backpack | Feature | Boundary Supply Errant X-Pac |
|---|---|---|
| Storage | ||
| N | Compression | Y |
| None | Expanded Capacity | None |
| 3 | Opening | 3 |
| N | Passport | N |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| N | Hip Belt | N |
| removable | Sternum Strap | Y |
| Inside | ||
| 15in | Laptop | 17in |
| 1 | Main Compartments | 1 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1 | Water Bottle Holder | 1 |
| Y | Water Resistant | Y |
| Material | |
| Venture-weave polyester | X-Pac |
Boundary Supply Errant X-Pac
| Capacity | 22 L |
| Weight | 1.4 kg |
| Dimensions | 48×29×14 cm |
| Airline fit | 93% |
| Price | $250 |
Key differences between the Bellroy Shift Backpack and Boundary Supply Errant X-Pac
- Compression straps: No on the Bellroy Shift Backpack; Yes on the Boundary Supply Errant X-Pac.
- Sternum strap: Removable on the Bellroy Shift Backpack; Yes on the Boundary Supply Errant X-Pac.
- Laptop sleeve: 15in on the Bellroy Shift Backpack; 17in on the Boundary Supply Errant X-Pac.
Both have: backpack straps, 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. 163 accept both. 0 accept only the Bellroy Shift Backpack, and 12 accept only the Boundary Supply Errant X-Pac.
Only the Boundary Supply Errant X-Pac fits
Air Niugini, Belavia, Etihad Airways, Liat Airlines, Oman Air, Qatar Airways, Regional Express, Royal Jordanian, Scoot, Tiger Airways, Virgin Australia, WestJet.
Bellroy Shift Backpack vs. Boundary Supply Errant X-Pac: which should you pack?
The Bellroy Shift Backpack carries the same capacity as the Boundary Supply Errant X-Pac (22L vs. 22L), while the Bellroy Shift Backpack is the lighter pack at 1.25kg (vs. 1.4kg). For carry-on flexibility, the Boundary Supply Errant X-Pac fits 93% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Bellroy Shift Backpack; if you want to travel lighter, the Bellroy Shift Backpack is the better call.