DEFY The Ultimate Overnighter vs Thule Aion Duffel 35L
The DEFY The Ultimate Overnighter is 36L and 1.13kg2.5lb; the Thule Aion Duffel 35L is 35L and 1.09kg2.4lb. The Thule Aion Duffel 35L is 0.04kg0.1lb lighter. The Thule Aion Duffel 35L costs $48.05000000000001 less. The DEFY The Ultimate Overnighter fits the carry-on limit of 1 of 36 major airlines and the Thule Aion Duffel 35L fits 1; under the seat, 0 and 0 of 26.
| Spec | DEFY The Ultimate Overnighter | Thule Aion Duffel 35L |
|---|---|---|
| Price | $268 | $219.95Best |
| Volume | 36L | 35L |
| Weight | 1.13kg2.5lb | 1.09kg2.4lbBest |
| Carry-on compliance | 3% | 3% |
| Personal-item compliance | 0% | 0% |
| Dimensions | 30.5×48.3×30.5cm12×19×12in | 32×52.1×30cm12.5×20.5×12in |
| Laptop | no laptop sleeve | 16" |
| Compartments | n/a | 2 |
| Opening | two oversized YKK AquaGuard zips | n/a |
| Warranty | No fixed term | 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 | Removable |
| Luggage pass-through | No | Yes |
| Camera compartment | No | No |
| Material | 1050D water-resistant MIL-SPEC ballistic nylon exterior, 1000D water-resistant silver CORDURA lining | Waxed P600 polyester canvas |
| Last checked | 2026-10 | 2026-10 |
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.