To gain the most out of upper and lower-body activities such as throwing a medicine ball, boxing, or performing plyometric drills. With our original “wear while you play” technology, simply attach the Slastix to the two ankle and biceps straps and then to an anchored object or training partner (see photo) behind you and perform a variety of drills, from throwing and catching medicine balls, to lifting weights, to sprinting. The Double Gun provides added resistance to every move you make, which results in maximum strength-building benefits from your workout.