Aer Duffel Pack 3 vs The Brown Buffalo Conceal Pack 21L
The Aer Duffel Pack 3 is 21.4L and 1.32kg2.9lb; the The Brown Buffalo Conceal Pack 21L is 21L and 1.32kg2.9lb. They weigh the same. The Aer Duffel Pack 3 costs $50 less. The Aer Duffel Pack 3 fits the carry-on limit of 35 of 36 major airlines and the The Brown Buffalo Conceal Pack 21L fits 36; under the seat, 0 and 0 of 26.
| Spec | Aer Duffel Pack 3 | The Brown Buffalo Conceal Pack 21L |
|---|---|---|
| Price | $179Best | $229 |
| Volume | 21.4L | 21L |
| Weight | 1.32kg2.9lb | 1.32kg2.9lb |
| Carry-on compliance | 97% | 100%Best |
| Personal-item compliance | 0% | 0% |
| Dimensions | 52×30×20cm20.5×12×8in | 49.5×30.5×15.2cm19.5×12×6in |
| Laptop | 16"Best | 15" |
| Bottle pockets | 2 | n/a |
| Opening | Panel access, Front-load main compartment | Clamshell, full clamshell main compartment, front and rear concealed zip compartments |
| Warranty | Lifetime | Lifetime |
| Organizer | Yes | Yes |
| Shoe compartment | Yes | 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 | Yes | Removable |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | Yes |
| Camera compartment | No | No |
| Material | 1680D CORDURA ballistic nylon exterior, antimicrobial-treated liner, YKK zippers, Duraflex hardware | CORDURA 1000D MultiCam Black, CORDURA 1050D ballistic nylon or Challenge UltraGrid 210D by colourway, Challenge Sailcloth EPX400, YKK RCPU2 zips |
| Last checked | 2026-09 | 2026-10 |
Where their airline fit differs
| Airline | Limit | Aer Duffel Pack 3 | The Brown Buffalo Conceal Pack 21L |
|---|---|---|---|
| Qatar Airways | Carry-on | Too big | Fits |
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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.