Kapten & Son Tromso 12L vs WaterField Designs Sutter Slim Backpack
The Kapten & Son Tromso 12L is 12L and 1kg2.2lb; the WaterField Designs Sutter Slim Backpack is 11L and 1kg2.2lb. They weigh the same. The Kapten & Son Tromso 12L fits the carry-on limit of 36 of 36 major airlines and the WaterField Designs Sutter Slim Backpack fits 36; under the seat, 20 and 22 of 26.
| Spec | Kapten & Son Tromso 12L | WaterField Designs Sutter Slim Backpack |
|---|---|---|
| Price | n/a | $289 |
| Volume | 12L | 11L |
| Weight | 1kg2.2lb | 1kg2.2lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 77% | 85%Best |
| Dimensions | 36×29×12cm14×11.5×4.5in | 39.4×28.6×9.5cm15.5×11.5×3.5in |
| Laptop | 13" | 16"Best |
| Opening | Flap with magnet and zip | main compartment zip, two external top and front pockets |
| Warranty | n/a | Lifetime |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | Yes | No |
| 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 | No | Yes |
| Camera compartment | No | No |
| Material | 60% PU, 40% recycled PET | 1050D black ballistic nylon or brown waxed canvas, full-grain leather front panel |
| Last checked | 2026-10 | 2026-10 |
Where their airline fit differs
| Airline | Limit | Kapten & Son Tromso 12L | WaterField Designs Sutter Slim Backpack |
|---|---|---|---|
| AirAsia | Personal item | Too big | Fits |
| Singapore Airlines | 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.