Rab Expedition II 50L Kitbag vs Rains Sibu Weekend Bag
The Rab Expedition II 50L Kitbag is 50L and 0.9kg2lb; the Rains Sibu Weekend Bag is 53.5L and 0.9kg2lb. They weigh the same. The Rab Expedition II 50L Kitbag costs $50 less. The Rab Expedition II 50L Kitbag fits the carry-on limit of 1 of 36 major airlines and the Rains Sibu Weekend Bag fits 1; under the seat, 0 and 0 of 26.
| Spec | Rab Expedition II 50L Kitbag | Rains Sibu Weekend Bag |
|---|---|---|
| Price | $125Best | $175 |
| Volume | 50L | 53.5L |
| Weight | 0.9kg2lb | 0.9kg2lb |
| Carry-on compliance | 3% | 3% |
| Personal-item compliance | 0% | 0% |
| Dimensions | 32×55×27cm12.5×21.5×10.5in | 32×48×26cm12.5×19×10in |
| Laptop | n/a | no laptop sleeve |
| Compartments | n/a | 1 |
| Opening | Large main opening with lockable YKK 10 coil luggage zip | coated zip |
| Warranty | Lifetime | 2 years |
| Organizer | No | 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 | Removable | Removable |
| Luggage pass-through | No | No |
| Camera compartment | No | No |
| Material | Tough 600D fabric with TPU water resistant film, 600D Polyester reinforced base | Technical nylon ripstop (100% PA) with water-repellent TPU coating, 10,000 mm water column |
| Last checked | 2026-10 | 2026-09 |
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.