[Security Protection for Home and Hotel]:Door jammer is a portable, industrial strength door security device that prevents unwanted entry,It can provide protection when you are at home or when traveling in hotels.[The Third Generation Upgrade Mechanics Design]:The door jammer adopts the third-generation mechanical design,it just takes moments to fit to any standard internal door,Once fitted, it uses displacement of force to barricade the door against an attempt at forced entry.by the way,it takes only seconds to install and remove,Very convenient.[Thickened Aluminum Alloy Material]:The door jammer is made of thick aluminum alloy material, which is sturdy and durable, and the bottom is made of high-quality rubber material, which has a strong grip and is suitable for floors of various materials.[Compact&Exquisite]:The door jammer is very compact and exquisite, it can be put in a bag or pocket, and we provide an extra storage bag to put it, you can carry it with you when you are on business or traveling.Colour: blackMaterial: aluminum alloySize: 11x4cmPackage Contents:1 * Door jammerOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.