Aer Flight Pack 3 vs GORUCK GR1 21L
The Aer Flight Pack 3 is 20L and 1.5kg3.3lb; the GORUCK GR1 21L is 21L and 1.5kg3.3lb. They weigh the same. The Aer Flight Pack 3 costs $216 less. The Aer Flight Pack 3 fits the carry-on limit of 36 of 36 major airlines and the GORUCK GR1 21L fits 36; under the seat, 1 and 1 of 26.
| Spec | Aer Flight Pack 3 | GORUCK GR1 21L |
|---|---|---|
| Price | $179Best | $395 |
| Volume | 20L | 21L |
| Weight | 1.5kg3.3lb | 1.5kg3.3lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 4% | 4% |
| Dimensions | 46×30×14cm18×12×5.5in | 46×29×14cm18×11.5×5.5in |
| Laptop | 16"Best | 15" |
| Compartments | 3 | n/a |
| Bottle pockets | 1 | 0 |
| Compression straps | 0 | 0 |
| Opening | n/a | Clamshell, Single main compartment opens flat for packing; quick-access zipper pocket under top handle |
| Warranty | Lifetime | Lifetime |
| Organizer | Yes | No |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | Removable |
| Water-resistant | No | Yes |
| Rain cover | No | No |
| MOLLE | No | Yes |
| Hip belt | No | No |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | Yes | Yes |
| Luggage pass-through | Yes | No |
| Camera compartment | No | No |
| Material | 1680D Cordura ballistic nylon exterior (bluesign approved), soft woven lining, YKK zippers | 1000D Cordura (back panel material varies by colorway) |
| 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.