I bought this item as I kept losing and damaging pen drives as they are just to easy to pop into a bag with multiple other items. Or worse, forgotten about and left in the tower of a pc or the back of a mac screen whereas this device always sits away from the USB port it is plugged in to it allows you to see it a lot easier.
At 250gb this is perfect for saving files that need to transferred from one computer to another, such as if you've completed work at home and then need to continue it at the office. I've found this little piece of equipment to be a life-saver when an email with an attachment hasn't sent and I need to access my documents away from my personal computer.
It is light and travels well, having had this item for a few years now it is showing no signs of slowing or of any physical wear and tear.
Don't bother with pen drives, get an external hard drive instead, yes it's bigger but it will last a lot longer.