This string is composed of a Co-polymer Monofilament with soft additives in order to create a string which provides reduced vibration and a calmer more forgiving feel on the shot. As well as this the string is spin friendly and is especially useful for top spin shots, and is also nicely durable. All of this means that the Wilson Shock Shield Mono is the ideal string for big hitters, who want a more forgiving feel and better control.