JKMEOO Speed Jump Rope, Fully Adjustable Skipping Cable Wire with Bearings-Mastering Double Unders, Best for Cross Fitness Training, WOD, Boxing, MMA, Cardio Exercise PERFECT DESIGN FOR YOU : It comes with a single thin rope, one set of screws to adjust the length. The rotation of the spinning mechanism is smooth and the rope and handles are overall light. EASY ADJUSTABLE AND FIT ANY HEIGHT : Full adjustable length up to 10ft, handle length:14.5cm .Fully Adjustable to fit men, women ,boys and girls. LIGHTWEIGHT : Weight approx 90g . It is made of durable plastic ,is very lightweight for easy to master,and you can fitness anytime and anywhere. 360 UNIQUE BLAZING FAST BALL BEARING: It makes the jump rope more visible, which is desirable for performances and safer for children. The beads also make a louder sound when they hit the ground, which helps some jump ropers to keep a good rhythm. Beads can also add a little weight to a rope which can alter the feel and performance. LIFETIME GUARANTEE : Any problem with your purchase please fell free to contact with us.100% money back guarantee, or we can send you a NEW replacement.