For $25 you will get 10’ of Scrappy String.  This string can then be used during play to improve your lie or even void a stroke.  At any point, you may move the ball the length of the string or less, to any desired position (Get yourself out from behind a tree, out of a sand trap, call it good on the green, etc). After using the Scrappy String, you will cut the length used off, and have the remaining length to use at another point during the round.