Solgaard Compass Backpack vs Timbuk2 Alcatraz Backpack
The Solgaard Compass Backpack is 18L and 1kg2.2lb; the Timbuk2 Alcatraz Backpack is 18L and 0.99kg2.2lb. The Timbuk2 Alcatraz Backpack is 0.01kg0lb lighter. The Solgaard Compass Backpack costs $4 less. The Solgaard Compass Backpack fits the carry-on limit of 36 of 36 major airlines and the Timbuk2 Alcatraz Backpack fits 35; under the seat, 20 and 0 of 26.
| Spec | Solgaard Compass Backpack | Timbuk2 Alcatraz Backpack |
|---|---|---|
| Price | $165Best | $169 |
| Volume | 18L | 18L |
| Weight | 1kg2.2lb | 0.99kg2.2lbBest |
| Carry-on compliance | 100%Best | 97% |
| Personal-item compliance | 77%Best | 0% |
| Dimensions | 40×28×11cm15.5×11×4.5in | 51×33×15.3cm20×13×6in |
| Laptop | 15" | 17"Best |
| Bottle pockets | 1 | n/a |
| Warranty | 2 years | Lifetime |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | No | No |
| 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 | Shore-Tex recycled fabric, recycled PET padding; recyclable with plastic bottles | Eco Cordura 1200 x 1500D recycled polyester canvas |
| Last checked | 2026-09 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Solgaard Compass Backpack | Timbuk2 Alcatraz Backpack |
|---|---|---|---|
| Air Canada | Personal item | Fits | Too big |
| Air France | Personal item | Fits | Too big |
| Allegiant Air | Personal item | Fits | Too big |
| American Airlines | Personal item | Fits | Too big |
| ANA (All Nippon Airways) | Personal item | Fits | Too big |
| British Airways | Personal item | Fits | Too big |
| easyJet | Personal item | Fits | Too big |
| Frontier Airlines | Personal item | Fits | Too big |
| JetBlue Airways | Personal item | Fits | Too big |
| KLM | Personal item | Fits | Too big |
| LATAM Airlines | Personal item | Fits | Too big |
| Lufthansa | Personal item | Fits | Too big |
| Norwegian Air Shuttle | Personal item | Fits | Too big |
| Qatar Airways | Carry-on | Fits | Too big |
| Ryanair | Personal item | Fits | Too big |
| SAS | Personal item | Fits | Too big |
| Turkish Airlines | Personal item | Fits | Too big |
| Volaris | Personal item | Fits | Too big |
| Vueling | Personal item | Fits | Too big |
| WestJet | Personal item | Fits | Too big |
| Wizz Air | Personal item | 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.