ALPAKA Momentum Duffel vs Cotopaxi Viaje 35L Travel Duffel
The ALPAKA Momentum Duffel is 35L and 0.82kg1.8lb; the Cotopaxi Viaje 35L Travel Duffel is 35L and 0.71kg1.6lb. The Cotopaxi Viaje 35L Travel Duffel is 0.11kg0.2lb lighter. The Cotopaxi Viaje 35L Travel Duffel costs $59 less. The ALPAKA Momentum Duffel fits the carry-on limit of 3 of 36 major airlines and the Cotopaxi Viaje 35L Travel Duffel fits 1; under the seat, 0 and 0 of 26.
| Spec | ALPAKA Momentum Duffel | Cotopaxi Viaje 35L Travel Duffel |
|---|---|---|
| Price | $189 | $130Best |
| Volume | 35L | 35L |
| Weight | 0.82kg1.8lb | 0.71kg1.6lbBest |
| Carry-on compliance | 8%Best | 3% |
| Personal-item compliance | 0% | 0% |
| Dimensions | 26×58×25cm10×23×10in | 30.5×53.3×27.9cm12×21×11in |
| Laptop | no laptop sleeve | 16" |
| Opening | wide-opening zip main compartment | Zippered main compartment |
| Warranty | Lifetime | 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 | 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 |
| Bike-ready | No | No |
| Material | Axodyne weatherproof composite; YKK AquaGuard zippers | Body 100% recycled ripstop polyester with PFAS-free C0 DWR finish and PU backing; lining 100% recycled polyester |
| Last checked | 2026-09 | 2026-09 |
Where their airline fit differs
| Airline | Limit | ALPAKA Momentum Duffel | Cotopaxi Viaje 35L Travel Duffel |
|---|---|---|---|
| Frontier Airlines | Carry-on | Fits | Too big |
| Southwest Airlines | Carry-on | Fits | Too big |
Add more bags to this comparison
Specs come from each brand's own product page. Fit uses listed dimensions in any orientation. How we score carry-on fit.