Is the Proxis shell really more durable than polycarbonate?

Samsonite's Roxkin is a woven polypropylene that flexes under impact and returns to shape. Polycarbonate is stiffer and can crack under a hard hit. Owners report the Proxis surviving drops and throws well.

Does it fit most airline carry-on limits?

It is sold as a cabin bag and fits within the common carry-on envelope used by major airlines. Check the specific limits of stricter carriers, which vary.

Does it have a TSA lock?

Yes. A TSA combination lock is built into the shell, so security staff can open it without breaking it.

Is there a USB port or expander?

No. This model has no USB charging port and no zip expansion. Packing space is fixed.

A fabric-lined interior with a divider panel, compression straps and zipped pockets. It is functional rather than elaborate for the class.

How does it compare with Samsonite's Cosmolite?

Both use curved hardside shells. The Cosmolite is the lighter, more sculpted line, while the Proxis uses the Roxkin material and a more conventional layout.