ATD Supply ATD2 vs Think Tank Mirrorless Mover Backpack
The ATD Supply ATD2 is 18L and 1.3kg2.9lb; the Think Tank Mirrorless Mover Backpack is 18L and 1.3kg2.9lb. They weigh the same. The Think Tank Mirrorless Mover Backpack costs $306.25 less. The ATD Supply ATD2 fits the carry-on limit of 36 of 36 major airlines and the Think Tank Mirrorless Mover Backpack fits 31; under the seat, 7 and 0 of 26.
| Spec | ATD Supply ATD2 | Think Tank Mirrorless Mover Backpack |
|---|---|---|
| Price | $456 | $149.75Best |
| Volume | 18L | 18L |
| Expands to | 31L | n/a |
| Weight | 1.3kg2.9lb | 1.3kg2.9lb |
| Carry-on compliance | 100%Best | 86% |
| Personal-item compliance | 27%Best | 0% |
| Dimensions | 45×25×19cm17.5×10×7.5in | 42×28×23cm16.5×11×9in |
| Laptop | 15"Best | 14" |
| Bottle pockets | n/a | 2 |
| Opening | Roll-top, expandable roll top with Fidlock magnetic buckle, U-shaped back panel zip for top, side and clamshell access | Panel access, front panel |
| Warranty | Lifetime | Lifetime |
| Organizer | Yes | No |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | Removable | No |
| Water-resistant | Yes | No |
| Rain cover | No | Yes |
| MOLLE | Yes | No |
| Hip belt | Removable | Hideable |
| Sternum strap | Removable | Yes |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | No |
| Camera compartment | No | Yes |
| Bike-ready | No | No |
| Material | Challenge Sailcloth Ecopak EPLX600 waterproof laminate (100% post-consumer recycled polyester), RBC 200 lining, YKK zippers | 600D polyester PU, 1260 ballistic polyester |
| Last checked | 2026-10 | 2026-09 |
Where their airline fit differs
| Airline | Limit | ATD Supply ATD2 | Think Tank Mirrorless Mover Backpack |
|---|---|---|---|
| Air Arabia | Carry-on | Fits | Too big |
| Air India | Carry-on | Fits | Too big |
| Allegiant Air | Personal item | Fits | Too big |
| American Airlines | Personal item | Fits | Too big |
| British Airways | Personal item | Fits | Too big |
| easyJet | Personal item | Fits | Too big |
| Emirates | Carry-on | Fits | Too big |
| Frontier Airlines | Personal item | Fits | Too big |
| LATAM Airlines | Personal item | Fits | Too big |
| Ryanair | Carry-on | Fits | Too big |
| Volaris | Personal item | Fits | Too big |
| Vueling | 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.