Burn calories & tone muscles with The Burn Machine’s 4lb Speed Bag. At four pounds, the Novice is light enough for longer, more cardio-intense workouts. It helps to uncover sculpted shoulders, arms, back & torso muscles, while increasing aerobic & muscular endurance. Use the 4lb Speed Bag for a variety of workout applications from advanced athletic training to injury rehabilitation. This unit makes a great addition to group workout classes, & is also an inexpensive & portable alternative to the upper-body ergometer (UBE) machines. Comes with the Burn Machine Exercise Reference DVD & an exercise demonstration poster.