The Speed Bag is named after it's signature exercise, the punching motion of a conventional speed bag workout. However, unlike other speed bags, the Speed Bag is portable and can be used in a variety of workout applications. You can use the Speed Bag in a stationary position, whether it be standing, sitting or reclining. It can also be used while you're doing squats, curls and anything else in between. Whether you're doing injury rehabilitation or an advanced athlete, the Speed Bag is a choice tool for burning calories, toning muscles, building strength as well as increasing both cardio and muscular endurance. The Speed Bag combines the benefits of a complete conditioning and strengthening workout into one compact, handheld, machine. The only limitation the Speed Bag has is your imagination, it has endless versatility.