Doughnut Denver vs Rains Otaru Backpack
The Doughnut Denver is 19L and 1kg2.2lb; the Rains Otaru Backpack is 18.5L and 1kg2.2lb. They weigh the same. The Doughnut Denver fits the carry-on limit of 36 of 36 major airlines and the Rains Otaru Backpack fits 36; under the seat, 9 and 9 of 26.
| Spec | Doughnut Denver | Rains Otaru Backpack |
|---|---|---|
| Price | n/a | $195 |
| Volume | 19L | 18.5L |
| Weight | 1kg2.2lb | 1kg2.2lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 35% | 35% |
| Dimensions | 43×29×15.5cm17×11.5×6in | 42×30×14cm16.5×12×5.5in |
| Laptop | 15" | 16"Best |
| Compartments | n/a | 1 |
| Bottle pockets | 1 | n/a |
| Opening | Hook opening | broad zip top secured by c-clips |
| Warranty | 1 year | 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 | No | No |
| Luggage pass-through | No | No |
| Camera compartment | No | No |
| Material | 600D Polyester | Rains signature waterproof PU fabric and waterproof woven polyester (100% PES), 8,000 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.