Padding hopes.
A shell decides.

Almost every laptop bag is a soft sack with a padded pocket sewn into it. That arrangement works right up until the moment it matters — the overhead locker, the boot of a taxi, the floor of a train carriage — because padding only slows an impact down. It doesn't stop the bag folding around whatever is inside it.

The Vault is built the other way round. A moulded ABS front panel holds its shape under load, so pressure travels across the shell instead of into the machine behind it. The same rigidity is what lets a combination lock actually mean something: on a soft bag a lock is theatre, because the fabric gives. On this one the zip is the only way in.

It is a slim ten centimetres closed, which is a commuter bag. Run the expansion zip and it opens to seventeen, which is two days of clothes. One bag, both jobs, and no second bag to own.