Mountainsmith Zerk 13 UL Daypack vs Mountainsmith ZEVO 13L Daypack
The Mountainsmith Zerk 13 UL Daypack is 13L and 0.82kg1.8lb; the Mountainsmith ZEVO 13L Daypack is 13L and 0.82kg1.8lb. They weigh the same. The Mountainsmith Zerk 13 UL Daypack costs $15 less. The Mountainsmith Zerk 13 UL Daypack fits the carry-on limit of 36 of 36 major airlines and the Mountainsmith ZEVO 13L Daypack fits 36; under the seat, 1 and 1 of 26.
| Spec | Mountainsmith Zerk 13 UL Daypack | Mountainsmith ZEVO 13L Daypack |
|---|---|---|
| Price | $164.95Best | $179.95 |
| Volume | 13L | 13L |
| Weight | 0.82kg1.8lb | 0.82kg1.8lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 4% | 4% |
| Dimensions | 45.7×22.9×12.7cm18×9×5in | 45.7×22.9×12.7cm18×9×5in |
| Laptop | no laptop sleeve | no laptop sleeve |
| Bottle pockets | 2 | 2 |
| Opening | Panel access, Panel loader main compartment | Panel access, Zippered panel loader |
| Warranty | Lifetime | Lifetime |
| Torso length | 38.1 to 48.3cm (15 to 19in) | 38.1 to 48.3cm (15 to 19in) |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | Yes | Yes |
| Frame sheet | Yes | Yes |
| Water-resistant | No | No |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | Yes | Yes |
| Sternum strap | Yes | Yes |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | No | No |
| Camera compartment | No | No |
| Material | 100D and 210D ROBIC nylon X-Grid ripstop (UHMWPE) with UTS coating, 150D polyester liner | 500D nylon Mil-DTL-32439 Type 3 Class 3 (Multicam or Multicam Black), 150D high density polyester liner, YKK zippers |
| Last checked | 2026-09 | 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.