Lots of the most basic training activities, including running and cycling, focus on the lower body - the upper body needs work, too. With these hand and wrist weights, getting resistance on the forearm helps the entire upper body work along with the legs as a user runs, does aerobics, or engages in another cardio training activity. These arm weights are also good for specific arm training, like punching or raises.
An excellent addition to your favorite cardio kick boxing class!
Shadow Boxing - Put on hand weights. Alternate smooth, outward motions with left and right arms.
Arm weighted running - Use wrist irons while running to work the upper body while getting a cardio workout.