Lowe Alpine AirZone Trek ND33:40 vs Tom Bihn Tri-Star
The Lowe Alpine AirZone Trek ND33:40 is 33L and 1.46kg3.2lb; the Tom Bihn Tri-Star is 33L and 1.53kg3.4lb. The Lowe Alpine AirZone Trek ND33:40 is 0.07kg0.2lb lighter. The Lowe Alpine AirZone Trek ND33:40 fits the carry-on limit of 0 of 36 major airlines and the Tom Bihn Tri-Star fits 32; under the seat, 0 and 0 of 26.
| Spec | Lowe Alpine AirZone Trek ND33:40 | Tom Bihn Tri-Star |
|---|---|---|
| Price | n/a | $395 |
| Volume | 33L | 33L |
| Expands to | 40L | n/a |
| Weight | 1.46kg3.2lbBest | 1.53kg3.4lb |
| Carry-on compliance | 0% | 89%Best |
| Personal-item compliance | 0% | 0% |
| Dimensions | 69×33×29cm27×13×11.5in | 33×48×20.5cm13×19×8in |
| Laptop | n/a | no laptop sleeve |
| Bottle pockets | 2 | 1 |
| Opening | Top-loading, Lidded top opening plus zipped front entry, with a divider panel | n/a |
| Warranty | n/a | Lifetime |
| Organizer | No | No |
| Shoe compartment | No | No |
| Hydration sleeve | Yes | No |
| Frame sheet | No | No |
| Water-resistant | No | No |
| Rain cover | Yes | No |
| MOLLE | No | No |
| Hip belt | Yes | No |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | No | No |
| Camera compartment | No | No |
| Material | n/a | bluesign certified 630d High-Tenacity 2x2 ballistic nylon exterior (1050d option), 200d Halcyon nylon ripstop interior, YKK water-repellent zippers |
| Last checked | 2026-10 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Lowe Alpine AirZone Trek ND33:40 | Tom Bihn Tri-Star |
|---|---|---|---|
| Air Canada | Carry-on | Too big | Fits |
| Air France | Carry-on | Too big | Fits |
| AirAsia | Carry-on | Too big | Fits |
| Alaska Airlines | Carry-on | Too big | Fits |
| Allegiant Air | Carry-on | Too big | Fits |
| American Airlines | Carry-on | Too big | Fits |
| ANA (All Nippon Airways) | Carry-on | Too big | Fits |
| Avianca | Carry-on | Too big | Fits |
| British Airways | Carry-on | Too big | Fits |
| Cebu Pacific | Carry-on | Too big | Fits |
| Delta Air Lines | Carry-on | Too big | Fits |
| easyJet | Carry-on | Too big | Fits |
| Emirates | Carry-on | Too big | Fits |
| Frontier Airlines | Carry-on | Too big | Fits |
| Gol Linhas Aereas | Carry-on | Too big | Fits |
| IndiGo | Carry-on | Too big | Fits |
| JetBlue Airways | Carry-on | Too big | Fits |
| KLM | Carry-on | Too big | Fits |
| LATAM Airlines | Carry-on | Too big | Fits |
| Lufthansa | Carry-on | Too big | Fits |
| Norwegian Air Shuttle | Carry-on | Too big | Fits |
| Qantas | Carry-on | Too big | Fits |
| Qatar Airways | Carry-on | Too big | Fits |
| SAS | Carry-on | Too big | Fits |
| Singapore Airlines | Carry-on | Too big | Fits |
| Southwest Airlines | Carry-on | Too big | Fits |
| Turkish Airlines | Carry-on | Too big | Fits |
| United Airlines | Carry-on | Too big | Fits |
| Vietjet Air | Carry-on | Too big | Fits |
| Volaris | Carry-on | Too big | Fits |
| WestJet | Carry-on | Too big | Fits |
| Wizz Air | Carry-on | 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.