Aer City Sling 2 vs DEFY The Parker Pack 2.0
The Aer City Sling 2 is 2.5L and 0.41kg0.9lb; the DEFY The Parker Pack 2.0 is 3L and 0.45kg1lb. The Aer City Sling 2 is 0.04kg0.1lb lighter. The Aer City Sling 2 costs $79 less. The Aer City Sling 2 fits the carry-on limit of 36 of 36 major airlines and the DEFY The Parker Pack 2.0 fits 36; under the seat, 25 and 23 of 26.
| Spec | Aer City Sling 2 | DEFY The Parker Pack 2.0 |
|---|---|---|
| Price | $89Best | $168 |
| Volume | 2.5L | 3L |
| Weight | 0.41kg0.9lbBest | 0.45kg1lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 96%Best | 88% |
| Dimensions | 12×33×9cm4.5×13×3.5in | 15.2×20.3×10.2cm6×8×4in |
| Laptop | n/a | no laptop sleeve |
| Compartments | n/a | 2 |
| Opening | n/a | two YKK AquaGuard zip compartments |
| Warranty | Lifetime | No fixed term |
| Organizer | Yes | No |
| 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 | No | No |
| Load lifters | No | No |
| Shoulder strap | Hideable | No |
| Luggage pass-through | No | No |
| Camera compartment | No | No |
| Material | 700D CORDURA exterior (bluesign approved), soft woven lining (bluesign approved), YKK zippers, aircraft-grade aluminum tension locks | 1050D water-resistant MIL-SPEC ballistic nylon exterior, 1000D water-resistant silver CORDURA interior |
| Last checked | 2026-10 | 2026-10 |
Where their airline fit differs
| Airline | Limit | Aer City Sling 2 | DEFY The Parker Pack 2.0 |
|---|---|---|---|
| AirAsia | Personal item | Fits | Too big |
| Singapore 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.