Aer Travel Pack 4 35L vs. Tom Bihn Techonaut 30
Two carry-on travel backpacks, compared spec for spec.
Aer Travel Pack 4 35L
| Capacity | 35 L |
| Weight | 1.8 kg |
| Dimensions | 55×34×23 cm |
| Airline fit | 68% |
| Price | $260 |
Feature by feature
| Aer Travel Pack 4 35L | Feature | Tom Bihn Techonaut 30 |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 1 |
| top | Passport | top |
| Y | Passthrough | Y |
| Carry | ||
| Y | Backpack | hideable |
| optional | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside | ||
| 16in | Laptop | 16in |
| 5 | Main Compartments | 5 |
| Y | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | 1, side |
| Y | Water Resistant | Y |
| Material | |
| 1680D CORDURA® ballistic nylon exterior (bluesign® approved) | 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 Aer Travel Pack 4 35L and Tom Bihn Techonaut 30
- Backpack straps: Yes on the Aer Travel Pack 4 35L; Hideable on the Tom Bihn Techonaut 30.
- Hip belt: Optional on the Aer Travel Pack 4 35L; Removable on the Tom Bihn Techonaut 30.
- Built-in organizer: Yes on the Aer Travel Pack 4 35L; No on the Tom Bihn Techonaut 30.
- Water bottle pockets: 2, side on the Aer Travel Pack 4 35L; 1, side on the Tom Bihn Techonaut 30.
Both have: passport pocket, luggage passthrough, sternum strap, laptop sleeve, water resistant.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 129 accept both. 0 accept only the Aer Travel Pack 4 35L, and 9 accept only the Tom Bihn Techonaut 30.
Only the Tom Bihn Techonaut 30 fits
Etihad Airways, Liat Airlines, Oman Air, Pakistan International, Qatar Airways, Royal Jordanian, Scoot, Tiger Airways, WestJet.
Aer Travel Pack 4 35L vs. Tom Bihn Techonaut 30: which should you pack?
The Aer Travel Pack 4 35L carries 5L more than the Tom Bihn Techonaut 30 (35L vs. 30L), while the Tom Bihn Techonaut 30 is the lighter pack at 1kg (vs. 1.8kg). For carry-on flexibility, the Tom Bihn Techonaut 30 fits 73% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Aer Travel Pack 4 35L; if you want to travel lighter, the Tom Bihn Techonaut 30 is the better call.