Boundary Supply Prima vs. Tom Bihn Techonaut 30
Two carry-on travel backpacks, compared spec for spec.
Boundary Supply Prima
| Capacity | 30 L |
| Weight | 1.9 kg |
| Dimensions | 53×31×18 cm |
| Airline fit | 88% |
| Price | $319 |
Feature by feature
| Boundary Supply Prima | Feature | Tom Bihn Techonaut 30 |
|---|---|---|
| Storage | ||
| 2 | Compression | N |
| None | Expanded Capacity | None |
| 3 | Opening | 1 |
| top | Passport | top |
| Y | Passthrough | Y |
| Carry | ||
| Y | Backpack | hideable |
| removable | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside | ||
| 16in | Laptop | 16in |
| 0 | Main Compartments | 5 |
| Y | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | 1, side |
| Y | Water Resistant | Y |
| Material | |
| 500D Kodra Nylon YKK StormGuard | 400d Halcyon/420d nylon ripstop exterior |
Tom Bihn Techonaut 30
| Capacity | 30 L |
| Weight | 1 kg |
| Dimensions | 50×32×21 cm |
| Airline fit | 73% |
| Price | $400 |
Key differences between the Boundary Supply Prima and Tom Bihn Techonaut 30
- Compression straps: 2 on the Boundary Supply Prima; No on the Tom Bihn Techonaut 30.
- Opening: Top flap on the Boundary Supply Prima; Clamshell on the Tom Bihn Techonaut 30.
- Backpack straps: Yes on the Boundary Supply Prima; Hideable on the Tom Bihn Techonaut 30.
- Built-in organizer: Yes on the Boundary Supply Prima; No on the Tom Bihn Techonaut 30.
Both have: passport pocket, luggage passthrough, hip belt, sternum strap, laptop sleeve, 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. 134 accept both. 33 accept only the Boundary Supply Prima, and 4 accept only the Tom Bihn Techonaut 30.
Only the Boundary Supply Prima fits
Air Baltic, Air China, Air Malta, Air Serbia, Air Seychelles, Asiana Airlines, ATA Airlines, Blue Air, Bulgaria Air, China Eastern, Emirates Airlines, Enter Air, flybe, Icelandair, InselAir, Juneyao Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Royal Brunei Airlines, Ryanair, S7, Shandong Airlines, Shenzhen Airlines, Sun Express, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), TUI, Ukraine International, VIM Airlines (Closed), Volotea, Xiamen.
Only the Tom Bihn Techonaut 30 fits
Etihad Airways, Oman Air, Qatar Airways, Royal Jordanian.
Boundary Supply Prima vs. Tom Bihn Techonaut 30: which should you pack?
The Boundary Supply Prima carries the same capacity as the Tom Bihn Techonaut 30 (30L vs. 30L), while the Tom Bihn Techonaut 30 is the lighter pack at 1kg (vs. 1.9kg). For carry-on flexibility, the Boundary Supply Prima fits 88% 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 Tom Bihn Techonaut 30 is the better call.