Sportsun Jump Rope Adjustable For Cross Training Fitness and Cardio Best cardio workout, promotes the greatest amount of weight loss in the healthiest manner possible. Effective in building endurance, stamina and speed. A favorite amongst Boxing, MMA, Cross Fit and Cross Training enthusiasts. This training rope is focused on helping athletes improve their game-day performance by developing the five key components of superior athleticism: speed, power, agility, reaction and quickness The rope is made with a high quality PVC material, very easy to use and works great on different surfaces. Fully Adjustable. The entire length of the rope can be easily adjusted allowing you to get a personalized length by adjusting a couple of clips.