Aer Pro Pack Slim vs Champs Luggage Onyx Modern II Backpack
The Aer Pro Pack Slim is 12.5L and 0.86kg1.9lb; the Champs Luggage Onyx Modern II Backpack is 13L and 0.85kg1.9lb. The Champs Luggage Onyx Modern II Backpack is 0.01kg0lb lighter. The Aer Pro Pack Slim costs $6 less. The Aer Pro Pack Slim fits the carry-on limit of 36 of 36 major airlines and the Champs Luggage Onyx Modern II Backpack fits 36; under the seat, 9 and 7 of 26.
| Spec | Aer Pro Pack Slim | Champs Luggage Onyx Modern II Backpack |
|---|---|---|
| Price | $139Best | $145 |
| Volume | 12.5L | 13L |
| Weight | 0.86kg1.9lb | 0.85kg1.9lbBest |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 35%Best | 27% |
| Dimensions | 43×30.5×10cm17×12×4in | 43.2×30.5×11.4cm17×12×4.5in |
| Laptop | 16" | n/a |
| Bottle pockets | 1 | n/a |
| Warranty | Lifetime | 10 years |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | No | Yes |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | No | No |
| Sternum strap | Yes | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | Yes |
| Camera compartment | No | No |
| Material | 840D CORDURA re/cor recycled nylon exterior (bluesign approved), recycled nylon lining (bluesign approved), YKK zippers, Duraflex hardware | Water-resistant PU |
| Last checked | 2026-09 | 2026-10 |
Where their airline fit differs
| Airline | Limit | Aer Pro Pack Slim | Champs Luggage Onyx Modern II Backpack |
|---|---|---|---|
| Air Canada | Personal item | Fits | Too big |
| JetBlue Airways | 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.