ALPAKA Metro Backpack Pro vs WaterField Designs Trigo Laptop Backpack
The ALPAKA Metro Backpack Pro is 24L and 1.2kg2.6lb; the WaterField Designs Trigo Laptop Backpack is 24L and 1.2kg2.6lb. They weigh the same. The ALPAKA Metro Backpack Pro costs $170 less. The ALPAKA Metro Backpack Pro fits the carry-on limit of 36 of 36 major airlines and the WaterField Designs Trigo Laptop Backpack fits 36; under the seat, 1 and 0 of 26.
| Spec | ALPAKA Metro Backpack Pro | WaterField Designs Trigo Laptop Backpack |
|---|---|---|
| Price | $179Best | $349 |
| Volume | 24L | 24L |
| Weight | 1.2kg2.6lb | 1.2kg2.6lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 4%Best | 0% |
| Dimensions | 46×28×20cm18×11×8in | 48.3×33×15.2cm19×13×6in |
| Laptop | 16" | 16" |
| Bottle pockets | 1 | n/a |
| Opening | zip main compartment | main compartment zip, Ultrasuede lined top quick access pocket, triangle front pockets |
| Warranty | Lifetime | Lifetime |
| Organizer | Yes | 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 | 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 | Challenge Sailcloth ECOPAK EPLX450RS, ballistic nylon base, full-grain leather accents, water-resistant YKK zippers |
| Last checked | 2026-09 | 2026-10 |
Where their airline fit differs
| Airline | Limit | ALPAKA Metro Backpack Pro | WaterField Designs Trigo Laptop Backpack |
|---|---|---|---|
| Frontier Airlines | 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.