Deuter Duffel Pro 40 vs Gregory Alpaca 40
The Deuter Duffel Pro 40 is 40L and 1.2kg2.6lb; the Gregory Alpaca 40 is 40L and 1.23kg2.7lb. The Deuter Duffel Pro 40 is 0.03kg0.1lb lighter. The Deuter Duffel Pro 40 fits the carry-on limit of 31 of 36 major airlines and the Gregory Alpaca 40 fits 0; under the seat, 0 and 0 of 26.
| Spec | Deuter Duffel Pro 40 | Gregory Alpaca 40 |
|---|---|---|
| Price | $145 | n/a |
| Volume | 40L | 40L |
| Weight | 1.2kg2.6lbBest | 1.23kg2.7lb |
| Carry-on compliance | 86%Best | 0% |
| Personal-item compliance | 0% | 0% |
| Dimensions | 35×52×22cm14×20.5×8.5in | 29×58×34cm11.5×23×13.5in |
| Laptop | n/a | no laptop sleeve |
| Bottle pockets | n/a | 0 |
| Opening | Top-loading, Round arch opening with zipper | large U-zip opening with #10 YKK zipper |
| Warranty | 2 years | 50 years |
| Organizer | No | Yes |
| Shoe compartment | No | No |
| 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 | Hideable | No |
| Luggage pass-through | No | No |
| Camera compartment | No | No |
| Material | 600D PES TPU | recycled 900D polyester ripstop with TPU weather resistant coating, 135D recycled polyester lining |
| Last checked | 2026-10 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Deuter Duffel Pro 40 | Gregory Alpaca 40 |
|---|---|---|---|
| Air Canada | Carry-on | Fits | Too big |
| Air France | Carry-on | Fits | Too big |
| AirAsia | Carry-on | Fits | Too big |
| Alaska Airlines | Carry-on | Fits | Too big |
| Allegiant Air | Carry-on | Fits | Too big |
| American Airlines | Carry-on | Fits | Too big |
| ANA (All Nippon Airways) | Carry-on | Fits | Too big |
| Avianca | Carry-on | Fits | Too big |
| British Airways | Carry-on | Fits | Too big |
| Cebu Pacific | Carry-on | Fits | Too big |
| Delta Air Lines | Carry-on | Fits | Too big |
| easyJet | Carry-on | Fits | Too big |
| Emirates | Carry-on | Fits | Too big |
| Frontier Airlines | Carry-on | Fits | Too big |
| Gol Linhas Aereas | Carry-on | Fits | Too big |
| IndiGo | Carry-on | Fits | Too big |
| JetBlue Airways | Carry-on | Fits | Too big |
| KLM | Carry-on | Fits | Too big |
| LATAM Airlines | Carry-on | Fits | Too big |
| Lufthansa | Carry-on | Fits | Too big |
| Norwegian Air Shuttle | Carry-on | Fits | Too big |
| Qantas | Carry-on | Fits | Too big |
| SAS | Carry-on | Fits | Too big |
| Singapore Airlines | Carry-on | Fits | Too big |
| Southwest Airlines | Carry-on | Fits | Too big |
| Turkish Airlines | Carry-on | Fits | Too big |
| United Airlines | Carry-on | Fits | Too big |
| Vietjet Air | Carry-on | Fits | Too big |
| Volaris | Carry-on | Fits | Too big |
| WestJet | Carry-on | Fits | Too big |
| Wizz Air | 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.