This boxing bag can be simply and quickly installed in a 28"-36" door https://offerup.com/redirect/?o=ZnJhbWUuSXQ= uses tension to safely fix the boxing bag in the right position without damaging the door frame and can be installed quickly without tools. • Great home exercise. Aerobic exercise and decompression can not only exercise the speed, agility and flexibility of boxing. You can not only exercise your arms, but also exercise your body's torso. • The unit weighs 3.8 pounds and is very compact. It can be put into a suitcase. It is very suitable for exercise in a narrow space, so you can also easily carry it during the journey. • Boxing is a full-body exercise with full- body coordination and flexible footwork which helps relieve joints and release stress; it helps you burn more calories. Whether you are a beginner, or a professional; this boxing bag is very suitable. • If you do not have time to go to the gym, or can not go out due to the weather, simply hang it in the doorway for the best cardio workout, so you can boxing exercise in the comfort and fun of your home.