Alpha One Niner Evade 1.5 Backpack, Gen 3 vs Black Ember Citadel H2
The Alpha One Niner Evade 1.5 Backpack, Gen 3 is 25L and 1.7kg3.7lb; the Black Ember Citadel H2 is 25L and 1.6kg3.5lb. The Black Ember Citadel H2 is 0.1kg0.2lb lighter. The Alpha One Niner Evade 1.5 Backpack, Gen 3 costs $36 less. The Alpha One Niner Evade 1.5 Backpack, Gen 3 fits the carry-on limit of 36 of 36 major airlines and the Black Ember Citadel H2 fits 32; under the seat, 0 and 0 of 26.
| Spec | Alpha One Niner Evade 1.5 Backpack, Gen 3 | Black Ember Citadel H2 |
|---|---|---|
| Price | $249Best | $285 |
| Volume | 25L | 25L |
| Weight | 1.7kg3.7lb | 1.6kg3.5lbBest |
| Carry-on compliance | 100%Best | 89% |
| Personal-item compliance | 0% | 0% |
| Dimensions | 47×30×18cm18.5×12×7in | 50×31×21cm19.5×12×8.5in |
| Laptop | 16" | 16" |
| Compartments | 4 | n/a |
| Bottle pockets | 2 | 2 |
| Opening | Top-loading, top zip | half zip main compartment, two front fast access pockets, top essentials pocket |
| Warranty | 5 years | Lifetime |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | Yes | Yes |
| Rain cover | No | No |
| MOLLE | Yes | No |
| Hip belt | No | No |
| Sternum strap | No | Removable |
| Load lifters | No | Yes |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | Yes |
| Camera compartment | No | No |
| Bike-ready | No | No |
| Material | Challenge Ultra 400TX, Dimension-Polyant X42, or 500D Nylon with 200D UHMWPE ripstop nylon lining | EmberTex PFAS-free 1220x600D nylon 6 with bonded laser-cut Hypalon panels, 200D and 420D ripstop nylon lining, YKK Aquaguard zippers, T6 anodized aluminum hardware |
| Last checked | 2026-09 | 2026-10 |
Where their airline fit differs
| Airline | Limit | Alpha One Niner Evade 1.5 Backpack, Gen 3 | Black Ember Citadel H2 |
|---|---|---|---|
| Air Arabia | Carry-on | Fits | Too big |
| Air India | 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.