Béis The Ultimate Travel Duffle vs Knack Expandable Metro Duffel
The Béis The Ultimate Travel Duffle is 25.3L and 1.28kg2.8lb; the Knack Expandable Metro Duffel is 26L and 1.36kg3lb. The Béis The Ultimate Travel Duffle is 0.08kg0.2lb lighter. The Béis The Ultimate Travel Duffle costs $27 less. The Béis The Ultimate Travel Duffle fits the carry-on limit of 36 of 36 major airlines and the Knack Expandable Metro Duffel fits 31; under the seat, 8 and 0 of 26.
| Spec | Béis The Ultimate Travel Duffle | Knack Expandable Metro Duffel |
|---|---|---|
| Price | $118Best | $145 |
| Volume | 25.3L | 26L |
| Expands to | n/a | 36L |
| Weight | 1.28kg2.8lbBest | 1.36kg3lb |
| Carry-on compliance | 100%Best | 86% |
| Personal-item compliance | 31%Best | 0% |
| Dimensions | 31×43×19cm12×17×7.5in | 33×43.2×22.9cm13×17×9in |
| Laptop | sleeve, size not published | 16" |
| Bottle pockets | n/a | 1 |
| Opening | Clamshell, Clamshell, opens flat like a suitcase | zip top |
| 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 | No |
| Load lifters | No | No |
| Shoulder strap | Removable | Removable |
| Luggage pass-through | Yes | Yes |
| Camera compartment | No | No |
| Material | 100% nylon body, 100% polyester lining | Water-resistant 900 x 1200 denier high-twist high-density polyester, 150D antimicrobial nylon lining |
| Last checked | 2026-09 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Béis The Ultimate Travel Duffle | Knack Expandable Metro Duffel |
|---|---|---|---|
| Air Arabia | Carry-on | Fits | Too big |
| Air India | Carry-on | Fits | Too big |
| Allegiant Air | Personal item | Fits | Too big |
| American Airlines | Personal item | Fits | Too big |
| British Airways | Personal item | Fits | Too big |
| easyJet | Personal item | Fits | Too big |
| Emirates | Carry-on | Fits | Too big |
| Frontier Airlines | Personal item | Fits | Too big |
| JetBlue Airways | Personal item | Fits | Too big |
| LATAM Airlines | Personal item | Fits | Too big |
| Ryanair | Carry-on | Fits | Too big |
| Volaris | Personal item | 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.