ALPAKA Metro Backpack Pro vs Lo & Sons Melrose Rucksack
The ALPAKA Metro Backpack Pro is 24L and 1.2kg2.6lb; the Lo & Sons Melrose Rucksack is 24.2L and 1.22kg2.7lb. The ALPAKA Metro Backpack Pro is 0.02kg0lb lighter. The ALPAKA Metro Backpack Pro costs $219 less. The ALPAKA Metro Backpack Pro fits the carry-on limit of 36 of 36 major airlines and the Lo & Sons Melrose Rucksack fits 36; under the seat, 1 and 7 of 26.
| Spec | ALPAKA Metro Backpack Pro | Lo & Sons Melrose Rucksack |
|---|---|---|
| Price | $179Best | $398 |
| Volume | 24L | 24.2L |
| Weight | 1.2kg2.6lbBest | 1.22kg2.7lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 4% | 27%Best |
| Dimensions | 46×28×20cm18×11×8in | 41.3×34.3×17.1cm16.5×13.5×6.5in |
| Laptop | 16"Best | 13" |
| Bottle pockets | 1 | n/a |
| Opening | zip main compartment | zippered top opening |
| Warranty | Lifetime | 1 year |
| Fit | n/a | Women's |
| Organizer | Yes | Removable |
| Shoe compartment | No | Yes |
| 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 | Removable | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | Yes |
| Camera compartment | No | No |
| Material | Axoflux 400D ripstop nylon exterior; Axoflux X-Grid 150D ripstop polyester interior; AquaGuard zippers | Water-resistant fine-weave nylon exterior, signature jacquard lining |
| Last checked | 2026-09 | 2026-10 |
Where their airline fit differs
| Airline | Limit | ALPAKA Metro Backpack Pro | Lo & Sons Melrose Rucksack |
|---|---|---|---|
| Allegiant Air | Personal item | Too big | Fits |
| American Airlines | Personal item | Too big | Fits |
| British Airways | Personal item | Too big | Fits |
| easyJet | Personal item | Too big | Fits |
| LATAM Airlines | Personal item | Too big | Fits |
| Volaris | Personal item | Too big | Fits |
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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.