Rains Otaru Backpack vs Think Tank Retrospective EDC Backpack
The Rains Otaru Backpack is 18.5L and 1kg2.2lb; the Think Tank Retrospective EDC Backpack is 19L and 1kg2.2lb. They weigh the same. The Rains Otaru Backpack costs $44.75 less. The Rains Otaru Backpack fits the carry-on limit of 36 of 36 major airlines and the Think Tank Retrospective EDC Backpack fits 31; under the seat, 9 and 0 of 26.
| Spec | Rains Otaru Backpack | Think Tank Retrospective EDC Backpack |
|---|---|---|
| Price | $195Best | $239.75 |
| Volume | 18.5L | 19L |
| Weight | 1kg2.2lb | 1kg2.2lb |
| Carry-on compliance | 100%Best | 86% |
| Personal-item compliance | 35%Best | 0% |
| Dimensions | 42×30×14cm16.5×12×5.5in | 46×29×22.5cm18×11.5×9in |
| Laptop | 16" | 16" |
| Compartments | 1 | n/a |
| Opening | broad zip top secured by c-clips | Top-loading, top opening |
| Warranty | 2 years | Lifetime |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | Yes | Yes |
| Rain cover | No | Yes |
| MOLLE | No | No |
| Hip belt | No | No |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | No | Yes |
| Camera compartment | No | No |
| Material | Rains signature waterproof PU fabric and waterproof woven polyester (100% PES), 8,000 mm water column | Stone-washed weather-treated cotton canvas |
| Last checked | 2026-09 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Rains Otaru Backpack | Think Tank Retrospective EDC Backpack |
|---|---|---|---|
| Air Arabia | Carry-on | Fits | Too big |
| Air Canada | Personal item | Fits | Too big |
| Air India | Carry-on | 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 |
| Emirates | Carry-on | Fits | Too big |
| Frontier Airlines | Personal item | Fits | Too big |
| JetBlue Airways | Personal item | Fits | Too big |
| LATAM Airlines | Personal item | Fits | Too big |
| Ryanair | Carry-on | Fits | Too big |
| Volaris | Personal item | Fits | Too big |
| Vueling | Carry-on | 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.