Boundary Supply -- Prima System Modular Travel Backpack vs. Deuter Stepout 22
Two carry-on travel backpacks, compared spec for spec.
Boundary Supply -- Prima System Modular Travel Backpack
| Capacity | 22 L |
| Weight | 1.4 kg |
| Dimensions | 49×28×13 cm |
| Airline fit | 92% |
| Price | $268 |
Feature by feature
| Boundary Supply -- Prima System Modular Travel Backpack | Feature | Deuter Stepout 22 |
|---|---|---|
| Storage | ||
| Y | Compression | Y |
| 30L | Expanded Capacity | None |
| 0 | Opening | 4 |
| Y | Passport | N |
| Y | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| removable | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside | ||
| 17in | Laptop | 15in |
| 1 | Main Compartments | 1 |
| Y | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1 | Water Bottle Holder | 1 |
| Y | Water Resistant | Y |
| Material | |
| Nywool, Nylon, Kodra Nylon | 300D PES Ripstop |
Deuter Stepout 22
| Capacity | 22 L |
| Weight | 0.85 kg |
| Dimensions | 46×30×19 cm |
| Airline fit | 94% |
| Price | $75 |
Key differences between the Boundary Supply -- Prima System Modular Travel Backpack and Deuter Stepout 22
- Opening: Other on the Boundary Supply -- Prima System Modular Travel Backpack; Top zip on the Deuter Stepout 22.
- Passport pocket: Yes on the Boundary Supply -- Prima System Modular Travel Backpack; No on the Deuter Stepout 22.
- Luggage passthrough: Yes on the Boundary Supply -- Prima System Modular Travel Backpack; No on the Deuter Stepout 22.
- Laptop sleeve: 17in on the Boundary Supply -- Prima System Modular Travel Backpack; 15in on the Deuter Stepout 22.
- Built-in organizer: Yes on the Boundary Supply -- Prima System Modular Travel Backpack; No on the Deuter Stepout 22.
Both have: compression straps, backpack straps, hip belt, 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. 173 accept both. 1 accept only the Boundary Supply -- Prima System Modular Travel Backpack, and 5 accept only the Deuter Stepout 22.
Only the Boundary Supply -- Prima System Modular Travel Backpack fits
Great Lakes Airlines.
Only the Deuter Stepout 22 fits
American Eagle, easyJet, Ravn Alaska, Regional Express, Virgin Australia.
Boundary Supply -- Prima System Modular Travel Backpack vs. Deuter Stepout 22: which should you pack?
The Boundary Supply -- Prima System Modular Travel Backpack carries the same capacity as the Deuter Stepout 22 (22L vs. 22L), while the Deuter Stepout 22 is the lighter pack at 0.85kg (vs. 1.4kg). For carry-on flexibility, the Deuter Stepout 22 fits 94% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Boundary Supply -- Prima System Modular Travel Backpack; if you want to travel lighter, the Deuter Stepout 22 is the better call.