Aer Day Pack 3 vs Think Tank DarkLight 14L
The Aer Day Pack 3 is 14L and 1.27kg2.8lb; the Think Tank DarkLight 14L is 14L and 1.22kg2.7lb. The Think Tank DarkLight 14L is 0.05kg0.1lb lighter. The Aer Day Pack 3 costs $10.75 less. The Aer Day Pack 3 fits the carry-on limit of 36 of 36 major airlines and the Think Tank DarkLight 14L fits 36; under the seat, 7 and 0 of 26.
| Spec | Aer Day Pack 3 | Think Tank DarkLight 14L |
|---|---|---|
| Price | $159Best | $169.75 |
| Volume | 14L | 14L |
| Weight | 1.27kg2.8lb | 1.22kg2.7lbBest |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 27%Best | 0% |
| Dimensions | 44×30×14cm17.5×12×5.5in | 47.5×24.5×19cm18.5×9.5×7.5in |
| Laptop | 16" | no laptop sleeve |
| Bottle pockets | 1 | 1 |
| Opening | n/a | Panel access, back panel + top |
| Warranty | Lifetime | Lifetime |
| Organizer | Yes | No |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | Yes | No |
| Rain cover | No | Yes |
| MOLLE | No | Yes |
| Hip belt | No | Removable |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | Yes |
| Camera compartment | No | Yes |
| Material | 1680D CORDURA ballistic nylon exterior (bluesign approved), 840D nylon face with weather-resistant coating, recycled nylon lining (bluesign approved), YKK zippers, Duraflex hardware | 600D polyester PU, 1680D ballistic nylon, PFC-free DWR |
| Last checked | 2026-09 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Aer Day Pack 3 | Think Tank DarkLight 14L |
|---|---|---|---|
| Allegiant Air | Personal item | Fits | Too big |
| American Airlines | Personal item | Fits | Too big |
| British Airways | Personal item | Fits | Too big |
| easyJet | Personal item | Fits | Too big |
| Frontier Airlines | Personal item | Fits | Too big |
| LATAM Airlines | Personal item | Fits | Too big |
| Volaris | 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.