One of the most popular punching bags, the Cobra Reflex Bag, has been redesigned to provide even more benefits for competitive athletes and fitness enthusiasts alike. Totally free-standing, it can be conveniently placed where ever you need it, whether it’s in the gym, home workout area, or even your office. The industrial grade, rapid-rebound spring guarantees a lightning fast return of the bag every time, so you can build speed, hand-eye coordination, strength and conditioning. The foam filled punching bag requires no inflation and is ready to use right out of the box. Develop the speed of a cobra with the Viper Reflex Bag!!