Boundary Supply -- Prima System Modular Travel Backpack vs. Deuter UP Seoul
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 UP Seoul |
|---|---|---|
| Storage | ||
| Y | Compression | N |
| 30L | Expanded Capacity | 26L |
| 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 | Y |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1 | Water Bottle Holder | 1 |
| Y | Water Resistant | Y |
| Material | |
| Nywool, Nylon, Kodra Nylon | 300D PES Ripstop, 500D rPES |
Key differences between the Boundary Supply -- Prima System Modular Travel Backpack and Deuter UP Seoul
- Compression straps: Yes on the Boundary Supply -- Prima System Modular Travel Backpack; No on the Deuter UP Seoul.
- Expansion: 30L when expanded on the Boundary Supply -- Prima System Modular Travel Backpack; 26L when expanded on the Deuter UP Seoul.
- Opening: Other on the Boundary Supply -- Prima System Modular Travel Backpack; Top zip on the Deuter UP Seoul.
- Passport pocket: Yes on the Boundary Supply -- Prima System Modular Travel Backpack; No on the Deuter UP Seoul.
- Luggage passthrough: Yes on the Boundary Supply -- Prima System Modular Travel Backpack; No on the Deuter UP Seoul.
- Laptop sleeve: 17in on the Boundary Supply -- Prima System Modular Travel Backpack; 15in on the Deuter UP Seoul.
Both have: backpack straps, hip belt, sternum strap, 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. 173 accept both. 1 accept only the Boundary Supply -- Prima System Modular Travel Backpack, and 0 accept only the Deuter UP Seoul.
Only the Boundary Supply -- Prima System Modular Travel Backpack fits
Great Lakes Airlines.
Boundary Supply -- Prima System Modular Travel Backpack vs. Deuter UP Seoul: which should you pack?
The Boundary Supply -- Prima System Modular Travel Backpack carries 6L more than the Deuter UP Seoul (22L vs. 16L), while the Deuter UP Seoul is the lighter pack at 0.84kg (vs. 1.4kg). For carry-on flexibility, the Boundary Supply -- Prima System Modular Travel Backpack fits 92% 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 UP Seoul is the better call.