We've all had this happen to us; you're in a public restroom, close the stall door and then realize in horror that there's no lock. Now you don't have to wait for the person beside you to get out with this small and convenient device. The Stall Stopper's ingenious design lets you carry around a portable lock on you at all times. When you enter the stall simply place the Stall Stopper on top of the door so that it can't swing open. For that extra bit of polish, the Stall Stopper has the word Occupied printed on the outward face.