Grams28 301 Adventure Backpack vs Lowe Alpine AirZone Trek ND33:40
The Grams28 301 Adventure Backpack is 32.7L and 1.46kg3.2lb; the Lowe Alpine AirZone Trek ND33:40 is 33L and 1.46kg3.2lb. They weigh the same. The Grams28 301 Adventure Backpack fits the carry-on limit of 29 of 36 major airlines and the Lowe Alpine AirZone Trek ND33:40 fits 0; under the seat, 1 and 0 of 26.
| Spec | Grams28 301 Adventure Backpack | Lowe Alpine AirZone Trek ND33:40 |
|---|---|---|
| Price | $699 | n/a |
| Volume | 32.7L | 33L |
| Expands to | n/a | 40L |
| Weight | 1.46kg3.2lb | 1.46kg3.2lb |
| Carry-on compliance | 81%Best | 0% |
| Personal-item compliance | 4%Best | 0% |
| Dimensions | 46×35.5×20cm18×14×8in | 69×33×29cm27×13×11.5in |
| Laptop | 16" | n/a |
| Bottle pockets | n/a | 2 |
| Opening | Panel access, fully opening front panel, top opening closed with double buckles | Top-loading, Lidded top opening plus zipped front entry, with a divider panel |
| Warranty | Lifetime | n/a |
| Organizer | Yes | No |
| Shoe compartment | No | No |
| Hydration sleeve | No | Yes |
| Frame sheet | No | No |
| Water-resistant | Yes | No |
| Rain cover | No | Yes |
| MOLLE | No | No |
| Hip belt | No | Yes |
| Sternum strap | Removable | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | No | No |
| Camera compartment | No | No |
| Bike-ready | No | No |
| Material | X-Pac X11 by Dimension-Polyant with Italian pebbled bovine leather trim | n/a |
| Last checked | 2026-10 | 2026-10 |
Where their airline fit differs
| Airline | Limit | Grams28 301 Adventure Backpack | Lowe Alpine AirZone Trek ND33:40 |
|---|---|---|---|
| Air Arabia | Carry-on | Fits | Too big |
| Air Canada | Carry-on | Fits | Too big |
| Air India | Carry-on | Fits | Too big |
| AirAsia | Carry-on | Fits | Too big |
| Alaska Airlines | Carry-on | Fits | Too big |
| Allegiant Air | Carry-on | Fits | Too big |
| American Airlines | Carry-on | Fits | Too big |
| ANA (All Nippon Airways) | Carry-on | Fits | Too big |
| British Airways | Carry-on | Fits | Too big |
| Cebu Pacific | Carry-on | Fits | Too big |
| Delta Air Lines | Carry-on | Fits | Too big |
| easyJet | Carry-on | Fits | Too big |
| Emirates | Carry-on | Fits | Too big |
| Frontier Airlines | Carry-on | Fits | Too big |
| Frontier Airlines | Personal item | Fits | Too big |
| JetBlue Airways | Carry-on | Fits | Too big |
| Lufthansa | Carry-on | Fits | Too big |
| Norwegian Air Shuttle | Carry-on | Fits | Too big |
| Qantas | Carry-on | Fits | Too big |
| Qatar Airways | Carry-on | Fits | Too big |
| Ryanair | Carry-on | Fits | Too big |
| SAS | Carry-on | Fits | Too big |
| Singapore Airlines | Carry-on | Fits | Too big |
| Southwest Airlines | Carry-on | Fits | Too big |
| Turkish Airlines | Carry-on | Fits | Too big |
| Vietjet Air | Carry-on | Fits | Too big |
| Volaris | Carry-on | Fits | Too big |
| Vueling | Carry-on | Fits | Too big |
| WestJet | Carry-on | Fits | Too big |
| Wizz Air | 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.