Kapten & Son Helsinki Pro 23L vs WaterField Designs Air Porter Backpack
The Kapten & Son Helsinki Pro 23L is 23L and 1.3kg2.9lb; the WaterField Designs Air Porter Backpack is 22L and 1.31kg2.9lb. The Kapten & Son Helsinki Pro 23L is 0.01kg0lb lighter. The Kapten & Son Helsinki Pro 23L fits the carry-on limit of 35 of 36 major airlines and the WaterField Designs Air Porter Backpack fits 36; under the seat, 0 and 8 of 26.
| Spec | Kapten & Son Helsinki Pro 23L | WaterField Designs Air Porter Backpack |
|---|---|---|
| Price | n/a | $419 |
| Volume | 23L | 22L |
| Weight | 1.3kg2.9lbBest | 1.31kg2.9lb |
| Carry-on compliance | 97% | 100%Best |
| Personal-item compliance | 0% | 31%Best |
| Dimensions | 52×30×15.5cm20.5×12×6in | 41.9×30.5×17.8cm16.5×12×7in |
| Laptop | 15.6" | 16"Best |
| Opening | Zipper | main compartment zip, two top front pockets, external front pocket, two side 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 | Removable |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | Yes |
| Camera compartment | No | No |
| Material | 58% PU, 39% recycled PET, 3% polyester | 15 oz waxed canvas or EcoPac, full-grain leather accents, YKK waterproof zippers |
| Last checked | 2026-10 | 2026-10 |
Where their airline fit differs
| Airline | Limit | Kapten & Son Helsinki Pro 23L | WaterField Designs Air Porter Backpack |
|---|---|---|---|
| Allegiant Air | Personal item | Too big | Fits |
| American Airlines | Personal item | Too big | Fits |
| British Airways | Personal item | Too big | Fits |
| easyJet | Personal item | Too big | Fits |
| Frontier Airlines | Personal item | Too big | Fits |
| JetBlue Airways | Personal item | Too big | Fits |
| LATAM Airlines | Personal item | Too big | Fits |
| Qatar Airways | Carry-on | Too big | Fits |
| Volaris | 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.