Day Owl DayPack Mini vs Osprey Ozone Slim Pack
The Day Owl DayPack Mini is 10L and 0.45kg1lb; the Osprey Ozone Slim Pack is 10L and 0.51kg1.1lb. The Day Owl DayPack Mini is 0.06kg0.1lb lighter. The Day Owl DayPack Mini costs $20 less. The Day Owl DayPack Mini fits the carry-on limit of 36 of 36 major airlines and the Osprey Ozone Slim Pack fits 36; under the seat, 22 and 7 of 26.
| Spec | Day Owl DayPack Mini | Osprey Ozone Slim Pack |
|---|---|---|
| Price | $80Best | $100 |
| Volume | 10L | 10L |
| Weight | 0.45kg1lbBest | 0.51kg1.1lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 85%Best | 27% |
| Dimensions | 31.8×22.9×11.4cm12.5×9×4.5in | 45×29×18cm17.5×11.5×7in |
| Laptop | 11" | 16"Best |
| Bottle pockets | 1 | 2 |
| Opening | n/a | Panel access, panel access to main compartment |
| Warranty | Lifetime | Lifetime |
| Organizer | No | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | Yes | Yes |
| 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 | No | Yes |
| Camera compartment | No | No |
| Bike-ready | No | No |
| Material | First Mile waxed canvas made from 10 recycled post-consumer plastic bottles, 100% recycled polyester lining and trim, conflict-free metal YKK zippers | bluesign approved 100% recycled 210D high-tenacity nylon ripstop coated with carbonate, 420D recycled nylon bottom with PFAS-free DWR |
| Last checked | 2026-10 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Day Owl DayPack Mini | Osprey Ozone Slim Pack |
|---|---|---|---|
| Air Arabia | Personal item | Fits | Too big |
| Air Canada | Personal item | Fits | Too big |
| Air France | Personal item | Fits | Too big |
| ANA (All Nippon Airways) | Personal item | Fits | Too big |
| JetBlue Airways | Personal item | Fits | Too big |
| KLM | Personal item | Fits | Too big |
| Lufthansa | Personal item | Fits | Too big |
| Norwegian Air Shuttle | Personal item | Fits | Too big |
| Ryanair | Personal item | Fits | Too big |
| SAS | Personal item | Fits | Too big |
| Turkish Airlines | Personal item | Fits | Too big |
| United Airlines | Personal item | Fits | Too big |
| Vueling | Personal item | Fits | Too big |
| WestJet | Personal item | Fits | Too big |
| Wizz Air | 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.