Away The Zip Backpack vs. Boundary Supply Rennen X-Pac Daypack
Two carry-on travel backpacks, compared spec for spec.
Away The Zip Backpack
| Capacity | 20 L |
| Weight | 1.1 kg |
| Dimensions | 45×30.5×15 cm |
| Airline fit | 95% |
| Price | $236 |
Feature by feature
| Away The Zip Backpack | Feature | Boundary Supply Rennen X-Pac Daypack |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 4 | Opening | 4 |
| Y | Passport | N |
| Y | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| N | Hip Belt | N |
| N | Sternum Strap | N |
| Inside | ||
| 14in | Laptop | 15in |
| 1 | Main Compartments | 1 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1 | Water Bottle Holder | 1 |
| Y | Water Resistant | Y |
| Material | |
| Nylon with leather | Custom VX21 X-Pac material |
Boundary Supply Rennen X-Pac Daypack
| Capacity | 22 L |
| Weight | 0.9 kg |
| Dimensions | 46×28×18 cm |
| Airline fit | 95% |
| Price | $170 |
Key differences between the Away The Zip Backpack and Boundary Supply Rennen X-Pac Daypack
- Passport pocket: Yes on the Away The Zip Backpack; No on the Boundary Supply Rennen X-Pac Daypack.
- Luggage passthrough: Yes on the Away The Zip Backpack; No on the Boundary Supply Rennen X-Pac Daypack.
- Laptop sleeve: 14in on the Away The Zip Backpack; 15in on the Boundary Supply Rennen X-Pac Daypack.
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. 177 accept both. 2 accept only the Away The Zip Backpack, and 2 accept only the Boundary Supply Rennen X-Pac Daypack.
Only the Away The Zip Backpack fits
Air Tahiti, Gulf Air.
Only the Boundary Supply Rennen X-Pac Daypack fits
Air Niugini, Great Lakes Airlines.
Away The Zip Backpack vs. Boundary Supply Rennen X-Pac Daypack: which should you pack?
The Boundary Supply Rennen X-Pac Daypack carries 2L more than the Away The Zip Backpack (20L vs. 22L), while the Boundary Supply Rennen X-Pac Daypack is the lighter pack at 0.9kg (vs. 1.1kg). For carry-on flexibility, the Away The Zip Backpack fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Boundary Supply Rennen X-Pac Daypack; if you want to travel lighter, the Boundary Supply Rennen X-Pac Daypack is the better call.