Cotopaxi Allpa 50L Adventure Travel Pack vs Lowe Alpine Sirac 50
The Cotopaxi Allpa 50L Adventure Travel Pack is 50L and 2kg4.4lb; the Lowe Alpine Sirac 50 is 50L and 1.78kg3.9lb. The Lowe Alpine Sirac 50 is 0.22kg0.5lb lighter. The Cotopaxi Allpa 50L Adventure Travel Pack fits the carry-on limit of 0 of 36 major airlines and the Lowe Alpine Sirac 50 fits 0; under the seat, 0 and 0 of 26.
| Spec | Cotopaxi Allpa 50L Adventure Travel Pack | Lowe Alpine Sirac 50 |
|---|---|---|
| Price | $305 | n/a |
| Volume | 50L | 50L |
| Weight | 2kg4.4lb | 1.78kg3.9lbBest |
| Carry-on compliance | 0% | 0% |
| Personal-item compliance | 0% | 0% |
| Dimensions | 69×36×25cm27×14×10in | 80×41×33cm31.5×16×13in |
| Laptop | 16" | n/a |
| Compartments | n/a | 2 |
| Bottle pockets | 1 | 2 |
| Compression straps | 0 | n/a |
| Opening | n/a | Top-loading, Lidded top opening, plus a sleeping bag compartment with divider |
| Warranty | Lifetime | n/a |
| Organizer | Yes | No |
| Shoe compartment | No | No |
| Hydration sleeve | No | Yes |
| Frame sheet | No | No |
| Water-resistant | Yes | Yes |
| Rain cover | No | Removable |
| MOLLE | No | No |
| Hip belt | Hideable | Yes |
| Sternum strap | No | Yes |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | No | No |
| Camera compartment | No | No |
| Material | 100% recycled 840D TPU-coated nylon, 100% recycled 840D ballistic ripstop nylon with PFAS-free DWR and PU backing | 45% recycled 420D Dobby and 100% recycled 600D PW / HydroShield |
| Last checked | 2026-09 | 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.