There are many pen drives available in the market but sandisk is the best brand I prefer for pen drives because they are very small in style and made of hard plastic that means if it slipped no tension of breaking and there no risk or current while ejecting or or attaching the pen drive into a PC or a laptop . and the best part is that it has a program pre loaded in the pen drive in which we can keep our private file safely . allover it can used in our daily life easily