Aer Tech Pack 3 vs Timbuk2 Foundry Pack
The Aer Tech Pack 3 is 16L and 1.5kg3.3lb; the Timbuk2 Foundry Pack is 18L and 1.5kg3.3lb. They weigh the same. The Aer Tech Pack 3 costs $50 less. The Aer Tech Pack 3 fits the carry-on limit of 36 of 36 major airlines and the Timbuk2 Foundry Pack fits 36; under the seat, 1 and 0 of 26.
| Spec | Aer Tech Pack 3 | Timbuk2 Foundry Pack |
|---|---|---|
| Price | $219Best | $269 |
| Volume | 16L | 18L |
| Weight | 1.5kg3.3lb | 1.5kg3.3lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 4%Best | 0% |
| Dimensions | 46×31×18cm18×12×7in | 48×34×13cm19×13.5×5in |
| Laptop | 16"Best | 15" |
| Compartments | 3 | n/a |
| Bottle pockets | 1 | 1 |
| Compression straps | 0 | n/a |
| Warranty | Lifetime | Lifetime |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | Yes | No |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | No | No |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | Yes |
| Camera compartment | No | No |
| Material | 1680D Cordura ballistic nylon exterior with 840D weather-resistant-coated nylon face, recycled nylon lining, YKK zippers | Waxed cotton canvas with leather details |
| Last checked | 2026-09 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Aer Tech Pack 3 | Timbuk2 Foundry Pack |
|---|---|---|---|
| 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.