Billykirk No. 643 Large Carryall vs Kapten & Son Lisbon Duffle Backpack Small 30L
The Billykirk No. 643 Large Carryall is 30L and 1.7kg3.7lb; the Kapten & Son Lisbon Duffle Backpack Small 30L is 30L and 1.6kg3.5lb. The Kapten & Son Lisbon Duffle Backpack Small 30L is 0.1kg0.2lb lighter. The Billykirk No. 643 Large Carryall fits the carry-on limit of 31 of 36 major airlines and the Kapten & Son Lisbon Duffle Backpack Small 30L fits 32; under the seat, 0 and 0 of 26.
| Spec | Billykirk No. 643 Large Carryall | Kapten & Son Lisbon Duffle Backpack Small 30L |
|---|---|---|
| Price | $675 | n/a |
| Volume | 30L | 30L |
| Weight | 1.7kg3.7lb | 1.6kg3.5lbBest |
| Carry-on compliance | 86% | 89%Best |
| Personal-item compliance | 0% | 0% |
| Dimensions | 30.5×48.3×22.9cm12×19×9in | 21×48×23cm8.5×19×9in |
| Laptop | n/a | 15.6" |
| Opening | n/a | Zipper |
| Warranty | 5 years | n/a |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | Yes | Yes |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | No | No |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | Yes | No |
| Luggage pass-through | No | Yes |
| Camera compartment | No | No |
| Material | 20 oz waxed canvas (#10 Duck), premium vegetable-tanned full-grain leather, nickel-plated solid brass hardware | 88% recycled PET, 8% PU, 4% polyester |
| Last checked | 2026-10 | 2026-10 |
Where their airline fit differs
| Airline | Limit | Billykirk No. 643 Large Carryall | Kapten & Son Lisbon Duffle Backpack Small 30L |
|---|---|---|---|
| Emirates | Carry-on | 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.