Béis The Air Backpack vs Montane Transition Pack 28L
The Béis The Air Backpack is 28L and 0.62kg1.4lb; the Montane Transition Pack 28L is 28L and 0.64kg1.4lb. The Béis The Air Backpack is 0.02kg0lb lighter. The Béis The Air Backpack costs $27 less. The Béis The Air Backpack fits the carry-on limit of 36 of 36 major airlines and the Montane Transition Pack 28L fits 31; under the seat, 0 and 0 of 26.
| Spec | Béis The Air Backpack | Montane Transition Pack 28L |
|---|---|---|
| Price | $118Best | $145 |
| Volume | 28L | 28L |
| Weight | 0.62kg1.4lbBest | 0.64kg1.4lb |
| Carry-on compliance | 100%Best | 86% |
| Personal-item compliance | 0% | 0% |
| Dimensions | 46.3×31×17.8cm18×12×7in | 51×28×21.5cm20×11×8.5in |
| Laptop | sleeve, size not published | n/a |
| Bottle pockets | n/a | 2 |
| Opening | n/a | Clamshell, Clamshell zipped opening with bonded YKK AquaGuard zip |
| Warranty | n/a | Lifetime |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | No | Yes |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | No | No |
| Sternum strap | No | Yes |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | No |
| Camera compartment | No | No |
| Bike-ready | No | No |
| Material | 56% nylon, 44% recycled nylon body, polyester lining | RAPTOR Pro Lite nylon ripstop with PU face coating, HALO recycled polyester lining |
| Last checked | 2026-09 | 2026-10 |
Where their airline fit differs
| Airline | Limit | Béis The Air Backpack | Montane Transition Pack 28L |
|---|---|---|---|
| Air Arabia | Carry-on | Fits | Too big |
| Air India | Carry-on | Fits | Too big |
| Qatar Airways | Carry-on | Fits | Too big |
| Ryanair | Carry-on | Fits | Too big |
| Vueling | 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.