This mod retextures coinpurses you find in your travels (middle to large) to give you a better idea of how much money is in them before you accidentally pass up a 300+ coin one because you mistook it for one of those 9g pouches. It adds velvet (middle) and linen (highest number of coins) but does not change the texture of the tiny leather ones, which will still be leather and mostly not worth picking up.
It also allows you to craft decorative coinpurses (that you can take and toss without it disappearing) to decorate your vault or wherever.