Hotel security lock that latches on to the hotel swing arm latch keeping you secure and still allowing you to partially open your door to see and talk to visitors. Attaches in less than 3 seconds. This lock is fast, simple to use, comes with instructions and a draw string storage bag. It is the only lock that prevents the swing arm on a hotel door from being opened from the outside. You are not safe without it. You can go on you tube and see how easy it is for anyone to break into your hotel room.