A very cool design idea: this backpack consists of a soft inner bag and an outer shell. If you need to take off your backpack—now here’s where it gets a little fuzzy—you can leave it anywhere by closing the shell and chaining it to an immovable object.
This approach seems a bit byzantine for my taste but I suppose that it would be a good idea if, say you had to leave your backpack outside for some security reason. Otherwise, it’s an interesting intersection of design and usability or something.
Roly-Poly Backpack [Coolhunting]
