Boundary Supply Rennen MKII X-Pac vs Freitag F155 Clapton
The Boundary Supply Rennen MKII X-Pac is 18L and 0.85kg1.9lb; the Freitag F155 Clapton is 18L and 0.84kg1.9lb. The Freitag F155 Clapton is 0.01kg0lb lighter. The Boundary Supply Rennen MKII X-Pac costs $201 less. The Boundary Supply Rennen MKII X-Pac fits the carry-on limit of 36 of 36 major airlines and the Freitag F155 Clapton fits 36; under the seat, 7 and 9 of 26.
| Spec | Boundary Supply Rennen MKII X-Pac | Freitag F155 Clapton |
|---|---|---|
| Price | $199Best | $400 |
| Volume | 18L | 18L |
| Weight | 0.85kg1.9lb | 0.84kg1.9lbBest |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 27% | 35%Best |
| Dimensions | 45×29×17.5cm17.5×11.5×7in | 42×30×13cm16.5×12×5in |
| Laptop | 16" | 16" |
| Bottle pockets | 2 | n/a |
| Opening | wide coated zip opening, external laptop access | Roll-top, Fold-and-roll top with magnetic closure |
| Warranty | Lifetime | n/a |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | Yes | No |
| Water-resistant | No | 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 | PFAS-free Dimension-Polyant X-Pac ripstop, bluesign recycled interior | Used truck tarpaulin (polyester/PVC), 100% upcycled, car seat belts, recycled PET lining |
| Last checked | 2026-09 | 2026-10 |
Where their airline fit differs
| Airline | Limit | Boundary Supply Rennen MKII X-Pac | Freitag F155 Clapton |
|---|---|---|---|
| Air Canada | Personal item | Too big | Fits |
| JetBlue Airways | Personal item | 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.