Kapten & Son Bali Medium 18L vs Kapten & Son Oslo 18L
The Kapten & Son Bali Medium 18L is 18L and 1.1kg2.4lb; the Kapten & Son Oslo 18L is 18L and 1.1kg2.4lb. They weigh the same. The Kapten & Son Bali Medium 18L fits the carry-on limit of 36 of 36 major airlines and the Kapten & Son Oslo 18L fits 36; under the seat, 7 and 7 of 26.
| Spec | Kapten & Son Bali Medium 18L | Kapten & Son Oslo 18L |
|---|---|---|
| Volume | 18L | 18L |
| Weight | 1.1kg2.4lb | 1.1kg2.4lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 27% | 27% |
| Dimensions | 44×27×12cm17.5×10.5×4.5in | 45×29×13cm17.5×11.5×5in |
| Laptop | 15.6" | 15.6" |
| Opening | Zipper | Zipper |
| 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 | No | No |
| Luggage pass-through | Yes | Yes |
| Camera compartment | No | No |
| Material | 50% recycled PET, 40% PU, 10% polyester | 71% recycled PET, 26% PU, 3% polyester |
| Last checked | 2026-10 | 2026-10 |
Where their airline fit differs
Both bags pass and fail the same airline size limits.
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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.