Côte&Ciel Sormonne vs Lowepro Adventura BP 300 III
The Côte&Ciel Sormonne is 18L and 1.11kg2.4lb; the Lowepro Adventura BP 300 III is 18L and 1.11kg2.4lb. They weigh the same. The Lowepro Adventura BP 300 III costs $221 less. The Côte&Ciel Sormonne fits the carry-on limit of 36 of 36 major airlines and the Lowepro Adventura BP 300 III fits 36; under the seat, 9 and 1 of 26.
| Spec | Côte&Ciel Sormonne | Lowepro Adventura BP 300 III |
|---|---|---|
| Price | $350 | $129Best |
| Volume | 18L | 18L |
| Weight | 1.11kg2.4lb | 1.11kg2.4lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 35%Best | 4% |
| Dimensions | 43×28×13cm17×11×5in | 46×31.5×20cm18×12.5×8in |
| Laptop | 13" | 13" |
| Bottle pockets | n/a | 2 |
| Opening | main compartment plus two flat front pockets with hidden zips | Panel access, front access |
| Warranty | 1 year | n/a |
| Organizer | Yes | No |
| 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 | No |
| Camera compartment | No | Yes |
| Bike-ready | No | No |
| Material | EcoYarn polyester, black lining, matt black metal trims | 1680D ballistic polyester, 600D polyester |
| Last checked | 2026-10 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Côte&Ciel Sormonne | Lowepro Adventura BP 300 III |
|---|---|---|---|
| Air Canada | Personal item | Fits | Too big |
| Allegiant Air | Personal item | Fits | Too big |
| American Airlines | Personal item | Fits | Too big |
| British Airways | Personal item | Fits | Too big |
| easyJet | Personal item | Fits | Too big |
| JetBlue Airways | Personal item | Fits | Too big |
| LATAM Airlines | Personal item | Fits | Too big |
| Volaris | Personal item | Fits | Too big |
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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.