Adjustable length, contoured handles. Helps improve overall hand-body coordination, great for weight loss and cardio workout.Using our exercise jump rope can shape your cardio endurance, stamina and speed, while improving the muscle tension of your whole body. A great choice for boxing, MMA and cross training gym jump rope. he slow spinning provides a proper jump timing, helps improve your upright posture so that your entire back and shoulder muscles are engaged in the arc correctly. Our weighted jump rope for people is good for beginners to experts and can be used for all ages heavy jump rope.