Aer Travel Pack 4 28L vs Heimplanet Transit Line Travel Pack 28L
The Aer Travel Pack 4 28L is 28L and 1.6kg3.5lb; the Heimplanet Transit Line Travel Pack 28L is 28L and 1.5kg3.3lb. The Heimplanet Transit Line Travel Pack 28L is 0.1kg0.2lb lighter. The Aer Travel Pack 4 28L fits the carry-on limit of 36 of 36 major airlines and the Heimplanet Transit Line Travel Pack 28L fits 36; under the seat, 0 and 0 of 26.
| Spec | Aer Travel Pack 4 28L | Heimplanet Transit Line Travel Pack 28L |
|---|---|---|
| Price | $239 | n/a |
| Volume | 28L | 28L |
| Weight | 1.6kg3.5lb | 1.5kg3.3lbBest |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 0% | 0% |
| Dimensions | 49×32×20cm19.5×12.5×8in | 50×32×19cm19.5×12.5×7.5in |
| Laptop | 16" | 17"Best |
| Bottle pockets | 2 | 1 |
| Compression straps | n/a | 0 |
| Opening | Clamshell, clamshell (lay-flat main compartment) | Clamshell |
| Warranty | Lifetime | Lifetime |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | Yes | No |
| Water-resistant | No | Yes |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | No | Removable |
| Sternum strap | No | Removable |
| Load lifters | Yes | Yes |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | No |
| Camera compartment | No | No |
| Material | 1680D CORDURA ballistic nylon exterior (bluesign approved), ripstop nylon interior (bluesign approved), YKK zippers, Duraflex hardware | Dyecoshell 840D x 660D nylon, spun-dyed, PU, DWR shell; polyester lining; nylon webbing; YKK zippers; aluminum hardware |
| Last checked | 2026-09 | 2026-09 |
Where their airline fit differs
Both bags pass and fail the same airline size limits.
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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.