Athverv Zest Heavy Jump Ropes are designed to build strength, power, and endurance. It comes with upper and lower tractions bands which helps to provide better traction and more control on the handles for tricks and combinations. Its anti-slip coating and concave handle designs provide a strong, superior, and comfortable grip. Its edge-stem Ball Bearing System provides a frictionless smooth and fast spin. Zest Weighted rope is designed to match your gripping preference - Fist/Power Grip or Thumb Grip for more control. It comes with an adjustable Snap-lock makes adjusting the length incredibly easy. Heavy Jump ropes are super effective for all skill levels it helps beginners learn how to jump rope as it provides more feel and feedback as the rope rotates around the body to get the time and rhythm down and it takes advanced jumpers to a new level.