Black Ember WPT Duffel vs Knack Expandable Travel Duffel
The Black Ember WPT Duffel is 35L and 1.5kg3.3lb; the Knack Expandable Travel Duffel is 35L and 1.45kg3.2lb. The Knack Expandable Travel Duffel is 0.05kg0.1lb lighter. The Knack Expandable Travel Duffel costs $110 less. The Black Ember WPT Duffel fits the carry-on limit of 1 of 36 major airlines and the Knack Expandable Travel Duffel fits 1; under the seat, 0 and 0 of 26.
| Spec | Black Ember WPT Duffel | Knack Expandable Travel Duffel |
|---|---|---|
| Price | $275 | $165Best |
| Volume | 35L | 35L |
| Expands to | n/a | 48L |
| Weight | 1.5kg3.3lb | 1.45kg3.2lbBest |
| Carry-on compliance | 3% | 3% |
| Personal-item compliance | 0% | 0% |
| Dimensions | 50×30×28cm19.5×12×11in | 30.5×48.3×25.4cm12×19×10in |
| Laptop | 16" | no laptop sleeve |
| Opening | single top zip main compartment, front organizer pocket, separate shoe compartment, magnetic rear drop pocket | zip top |
| Warranty | Lifetime | n/a |
| Organizer | Yes | Yes |
| Shoe compartment | Yes | Yes |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | Yes | Yes |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | No | No |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | Yes | Removable |
| Luggage pass-through | Yes | Yes |
| Camera compartment | No | No |
| Bike-ready | No | No |
| Material | EmberTex PFAS-free 1220x600D nylon 6 with bonded laser-cut Hypalon panels, 200D ripstop nylon lining, YKK Aquaguard zippers, T6 anodized aluminum hardware | Water-resistant 900 x 1200 denier high-twist high-density polyester, 150D antimicrobial nylon lining |
| Last checked | 2026-10 | 2026-09 |
Where their airline fit differs
Both bags pass and fail the same airline size limits.
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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.