Boundary Supply Errant Sling vs Maxpedition Sitka Gearslinger
The Boundary Supply Errant Sling is 15L and 0.91kg2lb; the Maxpedition Sitka Gearslinger is 15L and 1.04kg2.3lb. The Boundary Supply Errant Sling is 0.13kg0.3lb lighter. The Maxpedition Sitka Gearslinger costs $48.00999999999999 less. The Boundary Supply Errant Sling fits the carry-on limit of 36 of 36 major airlines and the Maxpedition Sitka Gearslinger fits 36; under the seat, 21 and 1 of 26.
| Spec | Boundary Supply Errant Sling | Maxpedition Sitka Gearslinger |
|---|---|---|
| Price | $249 | $200.99Best |
| Volume | 15L | 15L |
| Weight | 0.91kg2lbBest | 1.04kg2.3lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 81%Best | 4% |
| Dimensions | 38×25×14cm15×10×5.5in | 45.7×26.7×17.8cm18×10.5×7in |
| Laptop | 14" | 14.1"Best |
| Bottle pockets | n/a | 1 |
| Opening | stormproof zip with magnetic auto-lock buckle | Clamshell, Full clamshell |
| Warranty | Lifetime | Lifetime |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | Yes |
| Frame sheet | No | No |
| Water-resistant | Yes | Yes |
| Rain cover | No | No |
| MOLLE | No | Yes |
| Hip belt | No | No |
| Sternum strap | No | Yes |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | No | No |
| Camera compartment | No | No |
| Material | Weatherproof fabrics | 1000D ballistic nylon, triple polyurethane coated, Teflon fabric protector |
| Last checked | 2026-09 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Boundary Supply Errant Sling | Maxpedition Sitka Gearslinger |
|---|---|---|---|
| Air Canada | Personal item | Fits | Too big |
| Air France | Personal item | Fits | Too big |
| Allegiant Air | Personal item | Fits | Too big |
| American Airlines | Personal item | Fits | Too big |
| ANA (All Nippon Airways) | Personal item | Fits | Too big |
| British Airways | Personal item | Fits | Too big |
| easyJet | Personal item | Fits | Too big |
| JetBlue Airways | Personal item | Fits | Too big |
| KLM | Personal item | Fits | Too big |
| LATAM Airlines | Personal item | Fits | Too big |
| Lufthansa | Personal item | Fits | Too big |
| Norwegian Air Shuttle | Personal item | Fits | Too big |
| Ryanair | Personal item | Fits | Too big |
| SAS | Personal item | Fits | Too big |
| Turkish Airlines | Personal item | Fits | Too big |
| United Airlines | Personal item | Fits | Too big |
| Volaris | Personal item | Fits | Too big |
| Vueling | Personal item | Fits | Too big |
| WestJet | Personal item | Fits | Too big |
| Wizz Air | Personal item | Fits | Too big |
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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.