Béis The Commuter Backpack vs Kapten & Son Tromso Small 9L
The Béis The Commuter Backpack is 10.3L and 0.73kg1.6lb; the Kapten & Son Tromso Small 9L is 9L and 0.8kg1.8lb. The Béis The Commuter Backpack is 0.07kg0.2lb lighter. The Béis The Commuter Backpack fits the carry-on limit of 36 of 36 major airlines and the Kapten & Son Tromso Small 9L fits 36; under the seat, 9 and 22 of 26.
| Spec | Béis The Commuter Backpack | Kapten & Son Tromso Small 9L |
|---|---|---|
| Price | $128 | n/a |
| Volume | 10.3L | 9L |
| Weight | 0.73kg1.6lbBest | 0.8kg1.8lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 35% | 85%Best |
| Dimensions | 41.9×31.8×12.1cm16.5×12.5×5in | 31×26×9.5cm12×10×3.5in |
| Laptop | sleeve, size not published | no laptop sleeve |
| Opening | n/a | Flap with magnet and zip |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | No | Yes |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | No | No |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | No |
| Camera compartment | No | No |
| Material | Nylon body, PU trim, polyester lining | 60% PU, 40% recycled PET |
| Last checked | 2026-09 | 2026-10 |
Where their airline fit differs
| Airline | Limit | Béis The Commuter Backpack | Kapten & Son Tromso Small 9L |
|---|---|---|---|
| Air France | Personal item | Too big | Fits |
| AirAsia | Personal item | Too big | Fits |
| ANA (All Nippon Airways) | Personal item | Too big | Fits |
| KLM | Personal item | Too big | Fits |
| Lufthansa | Personal item | Too big | Fits |
| Norwegian Air Shuttle | Personal item | Too big | Fits |
| Ryanair | Personal item | Too big | Fits |
| SAS | Personal item | Too big | Fits |
| Singapore Airlines | Personal item | Too big | Fits |
| Turkish Airlines | Personal item | Too big | Fits |
| Vueling | Personal item | Too big | Fits |
| WestJet | Personal item | Too big | Fits |
| Wizz Air | Personal item | Too big | Fits |
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Specs come from each brand's own product page. Fit uses listed dimensions in any orientation. How we score carry-on fit.