Grams28 152 Transit Backpack vs Lowepro ProTactic BP 350 AW III
The Grams28 152 Transit Backpack is 20.8L and 2.05kg4.5lb; the Lowepro ProTactic BP 350 AW III is 17L and 2.3kg5.1lb. The Grams28 152 Transit Backpack is 0.25kg0.6lb lighter. The Lowepro ProTactic BP 350 AW III costs $620 less. The Grams28 152 Transit Backpack fits the carry-on limit of 36 of 36 major airlines and the Lowepro ProTactic BP 350 AW III fits 36; under the seat, 8 and 0 of 26.
| Spec | Grams28 152 Transit Backpack | Lowepro ProTactic BP 350 AW III |
|---|---|---|
| Price | $899 | $279Best |
| Volume | 20.8L | 17L |
| Weight | 2.05kg4.5lbBest | 2.3kg5.1lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 31%Best | 0% |
| Dimensions | 43×28.5×17cm17×11×6.5in | 47×31.5×19cm18.5×12.5×7.5in |
| Laptop | 16"Best | 14" |
| Bottle pockets | n/a | 2 |
| Opening | Clamshell, fully openable main compartment, separate laptop sleeve, quick access front pocket | Panel access, top, dual side and full back panel |
| Warranty | Lifetime | n/a |
| Organizer | Yes | No |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | No | No |
| Rain cover | No | Yes |
| MOLLE | No | No |
| Hip belt | No | Removable |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | No |
| Camera compartment | No | Yes |
| Material | Italian pebbled bovine leather from Gruppo Mastrotto, environment certified tanning | Recycled 210D nylon ripstop, 600D and 900D polyester |
| Last checked | 2026-10 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Grams28 152 Transit Backpack | Lowepro ProTactic BP 350 AW III |
|---|---|---|---|
| Allegiant Air | Personal item | Fits | Too big |
| American Airlines | Personal item | Fits | Too big |
| British Airways | Personal item | Fits | Too big |
| easyJet | Personal item | Fits | Too big |
| Frontier Airlines | Personal item | Fits | Too big |
| JetBlue Airways | Personal item | Fits | Too big |
| LATAM Airlines | Personal item | Fits | Too big |
| Volaris | Personal item | Fits | Too big |
Add more bags to this comparison
Specs come from each brand's own product page. Fit uses listed dimensions in any orientation. How we score carry-on fit.