Boundary Supply Prima System vs Think Tank Walker Pro 30L
The Boundary Supply Prima System is 30L and 1.9kg4.2lb; the Think Tank Walker Pro 30L is 30L and 1.89kg4.2lb. The Think Tank Walker Pro 30L is 0.01kg0lb lighter. The Boundary Supply Prima System costs $10.75 less. The Boundary Supply Prima System fits the carry-on limit of 35 of 36 major airlines and the Think Tank Walker Pro 30L fits 14; under the seat, 0 and 0 of 26.
| Spec | Boundary Supply Prima System | Think Tank Walker Pro 30L |
|---|---|---|
| Price | $279Best | $289.75 |
| Volume | 30L | 30L |
| Expands to | 38L | n/a |
| Weight | 1.9kg4.2lb | 1.89kg4.2lbBest |
| Carry-on compliance | 97%Best | 39% |
| Personal-item compliance | 0% | 0% |
| Dimensions | 53×30×18cm21×12×7in | 54.3×32.7×24.8cm21.5×13×10in |
| Laptop | 16" | 16" |
| Bottle pockets | 1 | 2 |
| Compression straps | 0 | n/a |
| Opening | Clamshell | Panel access, front panel |
| Warranty | Lifetime | Lifetime |
| Organizer | Yes | Yes |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | Yes | No |
| Rain cover | No | Yes |
| MOLLE | No | No |
| Hip belt | No | Removable |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | Yes |
| Camera compartment | Insert sold separately | Yes |
| Material | n/a | Ballistic and ripstop nylon |
| Last checked | 2026-09 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Boundary Supply Prima System | Think Tank Walker Pro 30L |
|---|---|---|---|
| Air Arabia | Carry-on | Fits | Too big |
| Air Canada | Carry-on | Fits | Too big |
| Air India | Carry-on | Fits | Too big |
| AirAsia | Carry-on | Fits | Too big |
| Alaska Airlines | Carry-on | Fits | Too big |
| American Airlines | Carry-on | Fits | Too big |
| Cebu Pacific | Carry-on | Fits | Too big |
| Delta Air Lines | Carry-on | Fits | Too big |
| Emirates | Carry-on | Fits | Too big |
| JetBlue Airways | Carry-on | Fits | Too big |
| Lufthansa | Carry-on | Fits | Too big |
| Norwegian Air Shuttle | Carry-on | Fits | Too big |
| Qantas | Carry-on | Fits | Too big |
| Ryanair | Carry-on | Fits | Too big |
| SAS | Carry-on | Fits | Too big |
| Turkish Airlines | Carry-on | Fits | Too big |
| United Airlines | Carry-on | Fits | Too big |
| Vietjet Air | Carry-on | Fits | Too big |
| Vueling | Carry-on | Fits | Too big |
| WestJet | Carry-on | Fits | Too big |
| Wizz Air | Carry-on | 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.