Lowepro Flipside Trek BP 350 AW vs Think Tank Walker Pro 16L
The Lowepro Flipside Trek BP 350 AW is 17L and 1.4kg3.1lb; the Think Tank Walker Pro 16L is 16L and 1.43kg3.2lb. The Lowepro Flipside Trek BP 350 AW is 0.03kg0.1lb lighter. The Think Tank Walker Pro 16L costs $49.25 less. The Lowepro Flipside Trek BP 350 AW fits the carry-on limit of 35 of 36 major airlines and the Think Tank Walker Pro 16L fits 36; under the seat, 0 and 7 of 26.
| Spec | Lowepro Flipside Trek BP 350 AW | Think Tank Walker Pro 16L |
|---|---|---|
| Price | $279 | $229.75Best |
| Volume | 17L | 16L |
| Weight | 1.4kg3.1lbBest | 1.43kg3.2lb |
| Carry-on compliance | 97% | 100%Best |
| Personal-item compliance | 0% | 27%Best |
| Dimensions | 51×28×20cm20×11×8in | 45×29.8×19.7cm17.5×11.5×8in |
| Laptop | no laptop sleeve | 14" |
| Compartments | 2 | n/a |
| Bottle pockets | n/a | 2 |
| Opening | Panel access, body-side + top | Panel access, front panel |
| Warranty | n/a | Lifetime |
| Organizer | No | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | No | No |
| Rain cover | Yes | Yes |
| MOLLE | No | No |
| Hip belt | No | Removable |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | No | Yes |
| Camera compartment | Yes | Yes |
| Material | nylon | Ballistic and ripstop nylon |
| Last checked | 2026-09 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Lowepro Flipside Trek BP 350 AW | Think Tank Walker Pro 16L |
|---|---|---|---|
| Allegiant Air | Personal item | Too big | Fits |
| American Airlines | Personal item | Too big | Fits |
| British Airways | Personal item | Too big | Fits |
| easyJet | Personal item | Too big | Fits |
| Frontier Airlines | Personal item | Too big | Fits |
| LATAM Airlines | Personal item | Too big | Fits |
| Qatar Airways | Carry-on | Too big | Fits |
| Volaris | Personal item | Too big | Fits |
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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.