A. Sports & Fitness - Our jump ropes are for fitness workouts, warm-up exercises, aerobic training, skipping, MMA, boxing, speed training and endurance training. They can help build up muscle tension, improve cardio endurance and physical vitality, and burn fat, bringing you a healthy life. B. Soft Jump Rope - Our jump rope is made of durable polyester and covered with a silicon protective case to ensure a long service life. The rope is 9.84 feet long and 0.31 inches (8mm) in diameter, weighing 0.5 lbs. C. Comfortable & No More Tangling - The lightweight ergonomic handles are made of memory foam, which is soft and comfortable. They are 6.1 inches long and 1.38 inches in diameter. A durable double ball bearings system helps avoid twisting or winding like some other fitness ropes, ensuring smooth and rapid rotation. D. Length Adjustable - It can be quickly and easily adjusted from 9.84 ft to your desired length within minutes. It is suitable for people of all ages (adults, women, men, kids, boys and girls) and different levels of experience. E. Warranty Service - If you have any problems with our jumping rope or service, please feel free to contact us at any time. We will try our best to provide you with a good shopping experience.