Baboon to the Moon Utility Backpack 25L vs Zero Halliburton ZEST2 Backpack
The Baboon to the Moon Utility Backpack 25L is 25L and 1.22kg2.7lb; the Zero Halliburton ZEST2 Backpack is 25L and 1.22kg2.7lb. They weigh the same. The Baboon to the Moon Utility Backpack 25L costs $231 less. The Baboon to the Moon Utility Backpack 25L fits the carry-on limit of 29 of 36 major airlines and the Zero Halliburton ZEST2 Backpack fits 36; under the seat, 3 and 0 of 26.
| Spec | Baboon to the Moon Utility Backpack 25L | Zero Halliburton ZEST2 Backpack |
|---|---|---|
| Price | $179Best | $410 |
| Volume | 25L | 25L |
| Weight | 1.22kg2.7lb | 1.22kg2.7lb |
| Carry-on compliance | 81% | 100%Best |
| Personal-item compliance | 12%Best | 0% |
| Dimensions | 41.9×35.1×20cm16.5×14×8in | 48×28×15cm19×11×6in |
| Laptop | 16"Best | 15.6" |
| Compartments | n/a | 2 |
| Opening | Top-loading, top-entry main compartment, side-entry laptop compartment | n/a |
| Warranty | Lifetime | 10 years |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | No | No |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | No | No |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | No | Yes |
| Camera compartment | No | No |
| Material | Non-phthalate PVC tarpaulin, recycled nylon side pockets, recycled poly ripstop lining | Recycled CORDURA with genuine leather accents |
| Last checked | 2026-10 | 2026-10 |
Where their airline fit differs
| Airline | Limit | Baboon to the Moon Utility Backpack 25L | Zero Halliburton ZEST2 Backpack |
|---|---|---|---|
| Air France | Carry-on | Too big | Fits |
| Avianca | Carry-on | Too big | Fits |
| British Airways | Personal item | Fits | Too big |
| easyJet | Personal item | Fits | Too big |
| Frontier Airlines | Personal item | Fits | Too big |
| Gol Linhas Aereas | Carry-on | Too big | Fits |
| IndiGo | Carry-on | Too big | Fits |
| KLM | Carry-on | Too big | Fits |
| LATAM Airlines | Carry-on | Too big | Fits |
| United Airlines | 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.