Lowepro Pro Trekker BP 550 AW II vs Think Tank Airport Accelerator 41L
The Lowepro Pro Trekker BP 550 AW II is 40L and 3.65kg8lb; the Think Tank Airport Accelerator 41L is 41L and 2.8kg6.2lb. The Think Tank Airport Accelerator 41L is 0.85kg1.9lb lighter. The Think Tank Airport Accelerator 41L costs $160.2 less. The Lowepro Pro Trekker BP 550 AW II fits the carry-on limit of 15 of 36 major airlines and the Think Tank Airport Accelerator 41L fits 1; under the seat, 0 and 0 of 26.
| Spec | Lowepro Pro Trekker BP 550 AW II | Think Tank Airport Accelerator 41L |
|---|---|---|
| Price | $489.95 | $329.75Best |
| Volume | 40L | 41L |
| Weight | 3.65kg8lb | 2.8kg6.2lbBest |
| Carry-on compliance | 42%Best | 3% |
| Personal-item compliance | 0% | 0% |
| Dimensions | 50×35×24cm19.5×14×9.5in | 49.5×34×26cm19.5×13.5×10in |
| Laptop | 15" | 16"Best |
| Bottle pockets | 0 | 2 |
| 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 | Removable | Removable |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | No | Yes |
| Camera compartment | Yes | Yes |
| Material | 1680D ballistic polyester, 420D ripstop nylon, 500D and 600D polyester | 600D polyester, 1260D ballistic nylon, 420D nylon ripstop, DWR |
| Last checked | 2026-09 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Lowepro Pro Trekker BP 550 AW II | Think Tank Airport Accelerator 41L |
|---|---|---|---|
| Air France | Carry-on | Fits | Too big |
| Allegiant Air | Carry-on | Fits | Too big |
| ANA (All Nippon Airways) | Carry-on | Fits | Too big |
| Avianca | Carry-on | Fits | Too big |
| British Airways | Carry-on | Fits | Too big |
| easyJet | Carry-on | Fits | Too big |
| Frontier Airlines | Carry-on | Fits | Too big |
| Gol Linhas Aereas | Carry-on | Fits | Too big |
| IndiGo | Carry-on | Fits | Too big |
| KLM | Carry-on | Fits | Too big |
| LATAM Airlines | Carry-on | Fits | Too big |
| Qatar Airways | Carry-on | Fits | Too big |
| Southwest Airlines | Carry-on | Fits | Too big |
| Volaris | Carry-on | Fits | Too big |
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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.