ftm pitstop question

So I ordered the shotpocket from ftm pitstop and it arrived, (woo!) very happy with it. But i’m a little troubled because it only came with the stroker itself and not the bag to keep the stroker in like it displays on the page, is that supposed to be bought separately or does it not come with one? :_) otherwise, please let me know anywhere where I can buy a little bag to keep this thing safely in!