One bag that keeps up with the whole day.

You leave for errands with a sling. By the afternoon you are carrying more than you planned, and by Friday you need something you can actually travel with.

It changes with you: sling, carry-all, backpack, and back again, without taking anything out. It takes a second and you can do it standing on the street.

For people who would rather have one bag that adapts than three that wait in a closet.