I travel by train often and I needed a bag to carry around my essentials. I stumbled upon this bag on Insta when they showcased the bag and its compartments. Fell in love with it right then and there and bought it as soon as the reel finished (Mathematics by Mos Def is a good choice of song to feature!) Managed to fit a paperback novel, Sudoku book and my essential needs of travel. I'm a sucker for compartments and this baby has a lot. This is the only utility bag you need!