cloth?? mousepad & magic mouse

my new computer came with a magic mouse and 3/4 of a wireless keyboard, also in the box was a square black cloth about 6" X 6", which i assumed was either to clean the screen or to use as a trackpad, since its Apple and the trackpad usage seemed the most unique, that's how i've been using it. One of my cats decided it was a wonderful location to lie down and now i have a dirty , furry black square cloth, the material is one i'm unfamiliar with and i assume i can just run it through the wash, anybody know if my assumption is valid?

thanks