This practical door stopper is of strong structure, support long term using. Apply to kinds of doors protection, the door stop alarm can give you better service. Small size, light weight, the door wedge alarm is good for living room, bathroom, bedroom, will secure the door in one place and make your house safer. Features -Color:Black -Material:ABS -Size:9.80X4.40X2.90cm/3.85X1.73X1.14in -This door stopper is easy to use and convenient to carry, good for travel or use when staying alone indoors. -Capable of functioning as both a door stop alarm and door stopper, the door stopper prevents the door from sliding and keeps out. -Constructed from sturdy materials and featuring excellent workmanship, this door stopper is resistant to deformation and breakage. -No installation is required for the door alarm, simply place it behind any inner pull door in your home or hotel. -The wedge structure of this door stopper is reasonable, suitable for use on various floors, including wood, glass, and steel doors. Package list: 1 stopper