This backpack ruined my life for the brief time that I owned it. It is a formless, expandable sack, possessed by a demon spirit.

It's hideously large, but that's the least of it's flaws. You put this backpack on a table, put stuff in it, and the backpack finds a way to flump off the table and dump your stuff on the floor. Don't even think about putting a laptop in there, unless you're doing impact testing. Obviously, wearing this backpack is about as ergonomic as wearing a plastic bag. If there's a book in there, the book will lay perfectly horizontal at the bottom and dig into your back, swinging back and forth as you walk.

It antagonized me by day and haunted me in my sleep. Buy it for your worst enemy.