Ortlieb X-Tremer 59L vs Zpacks Arc Pro 50L
The Ortlieb X-Tremer 59L is 59L and 0.79kg1.7lb; the Zpacks Arc Pro 50L is 50L and 0.63kg1.4lb. The Zpacks Arc Pro 50L is 0.16kg0.4lb lighter. The Ortlieb X-Tremer 59L costs $329 less. The Ortlieb X-Tremer 59L fits the carry-on limit of 0 of 36 major airlines and the Zpacks Arc Pro 50L fits 0; under the seat, 0 and 0 of 26.
| Spec | Ortlieb X-Tremer 59L | Zpacks Arc Pro 50L |
|---|---|---|
| Price | $120Best | $449 |
| Volume | 59L | 50L |
| Weight | 0.79kg1.7lb | 0.63kg1.4lbBest |
| Carry-on compliance | 0% | 0% |
| Personal-item compliance | 0% | 0% |
| Dimensions | 70×31×31cm27.5×12×12in | 74×31.8×16.5cm29×12.5×6.5in |
| Laptop | n/a | no laptop sleeve |
| Compartments | n/a | 1 |
| Bottle pockets | n/a | 2 |
| Opening | Roll-top, roll closure | Roll-top, Roll top closure |
| Warranty | 5 years | 2 years |
| Torso length | n/a | 40.6 to 66cm (16 to 26in) |
| Sizes | n/a | Short, Medium, Tall |
| Organizer | No | No |
| Shoe compartment | No | No |
| Hydration sleeve | No | Yes |
| Frame sheet | No | Yes |
| Water-resistant | Yes | Yes |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | No | Yes |
| Sternum strap | Yes | Yes |
| Load lifters | No | Yes |
| Shoulder strap | No | No |
| Luggage pass-through | No | No |
| Camera compartment | No | No |
| Bike-ready | No | No |
| Material | PVC-coated polyester (pd620), PVC-coated Cordura (ps620c) | Ultra 100X (3.3 oz/sqyd) back and bottom, Ultra TenX (2.9 oz/sqyd) front, Venom Stretch Mesh pockets, taped seams, PFAS free |
| Last checked | 2026-10 | 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.