The standard type of pocket found on most jackets. With a straight pocket there is a variation available where you can have a small pocket located above the right pocket which is about half the width of the regular pocket. These pockets were originally used for keeping train tickets or bus tickets.
Slant
Slant pockets give a more streamline look to the jacket which draws the eyes down the body rather than across. Once again you can add a variation to the slant style pockets by adding a smaller pocket about half the size of the original pocket which is used for tickets or storing access cards.