Rains Trail Clip Front Backpack vs Zero Halliburton ZLM Large Backpack 27L
The Rains Trail Clip Front Backpack is 27L and 1.42kg3.1lb; the Zero Halliburton ZLM Large Backpack 27L is 27L and 1.41kg3.1lb. The Zero Halliburton ZLM Large Backpack 27L is 0.01kg0lb lighter. The Rains Trail Clip Front Backpack costs $445 less. The Rains Trail Clip Front Backpack fits the carry-on limit of 35 of 36 major airlines and the Zero Halliburton ZLM Large Backpack 27L fits 36; under the seat, 0 and 1 of 26.
| Spec | Rains Trail Clip Front Backpack | Zero Halliburton ZLM Large Backpack 27L |
|---|---|---|
| Price | $195Best | $640 |
| Volume | 27L | 27L |
| Weight | 1.42kg3.1lb | 1.41kg3.1lbBest |
| Carry-on compliance | 97% | 100%Best |
| Personal-item compliance | 0% | 4%Best |
| Dimensions | 52×35×16.5cm20.5×14×6.5in | 46×30×18cm18×12×7in |
| Laptop | 15" | 15.6"Best |
| Compartments | 1 | 2 |
| Bottle pockets | 2 | n/a |
| Opening | rounded zip opening | n/a |
| Warranty | 2 years | 10 years |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | Yes | No |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | No | No |
| Sternum strap | Yes | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | No | No |
| Camera compartment | No | No |
| Bike-ready | No | No |
| Material | Rains signature waterproof PU-coated polyester (100% PES), 8,000 mm water column | CORDURA ballistic nylon |
| Last checked | 2026-09 | 2026-10 |
Where their airline fit differs
| Airline | Limit | Rains Trail Clip Front Backpack | Zero Halliburton ZLM Large Backpack 27L |
|---|---|---|---|
| Frontier Airlines | Personal item | Too big | Fits |
| 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.