Stretch- and kink-resistant PVC cord for jump ropes. Comes at 10ft length. The inner string keeps the cord from stretching when jumping, helping with consistency. It also increases the durability of the cord, making it less likely to snap or break in cold weather. Includes two sets of "snap locks" cord ends for easy jump rope resizing. Use to replace worn cord or customize an existing jump rope. These cords can be used for indoors or outdoor jumping. Diameter: 4mm, 5mm or 6mm Length: 10ft Weight by 10ft segment: * 4mm: 1.5oz * 5mm: 2.5oz * 6mm: 3.5oz Note: Each PVC cord includes a set of cord ends for easy sizing. 6mm will not fit in edge handles or boxer handles.