Montane Trailblazer 18L vs Topo Designs Light Pack
The Montane Trailblazer 18L is 18L and 0.44kg1lb; the Topo Designs Light Pack is 18.5L and 0.45kg1lb. The Montane Trailblazer 18L is 0.01kg0lb lighter. The Topo Designs Light Pack costs $21 less. The Montane Trailblazer 18L fits the carry-on limit of 36 of 36 major airlines and the Topo Designs Light Pack fits 36; under the seat, 7 and 7 of 26.
| Spec | Montane Trailblazer 18L | Topo Designs Light Pack |
|---|---|---|
| Price | $100 | $79Best |
| Volume | 18L | 18.5L |
| Weight | 0.44kg1lbBest | 0.45kg1lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 27% | 27% |
| Dimensions | 45×24×18cm17.5×9.5×7in | 44.5×25.4×14cm17.5×10×5.5in |
| Laptop | n/a | 15" |
| Bottle pockets | 2 | 2 |
| Opening | Large main pocket with internal organisation | n/a |
| Warranty | Lifetime | Lifetime |
| Organizer | No | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | Yes | No |
| Frame sheet | No | No |
| Water-resistant | Yes | No |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | Yes | No |
| Sternum strap | Yes | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | No | No |
| Camera compartment | No | No |
| Material | RAPTOR CROSS LITE 70D 100% recycled nylon with PFC-free DWR | 400D recycled nylon, 210D recycled nylon liner |
| 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.